It increases the likelihood that daughter cells contain different genetic material. d. All the choice are correct. DNA replication occurs once prior to mitosis and twice prior to meiosis. can be programmed and is essential to normal development. B. a. the chromosome copies attach to the plasma membrane and are pulled apart by cell growth D. spermatogenesis. C) spermatogenesis. usually an exchange of material between nonhomologous chromosomes. d) the resulting cells contain 23 chromosomes. At the end of anaphase 1, each chromosomeis composed of to chromatids and at the end of anaphase 11, sister chromatids have separated. It increases the likelihood that daughter cells contain different genetic material. Meiosis occurs during all of the following EXCEPT Jacobs Syndrome, XYY, results from nondisjunction during spermatogenesis. All of the following statements about mitosis and meiosis are true, except which? Neither A B. Sources of genetic variation in a sexually reproducing population include(s) which of the following? answer choices. Females are short with a broad chest and widely spaced nipples. a. gametogenesis A. Homologs fail to separate during meiosis I. D) They orient the egg for penetration by the sperm. Species X reproduces asexually by fission and species Y reproduces sexually. B) Meiosis produces gametes with the haploid . B) metaphase II Which of the following best describes meiosis? There is only one chromosome of each type in each body cell, In the bone marrow, stem cells produce erythrocytes which lose their nucleus and function for a few months in the bloodstream before they die. B) four daughter cells at completion Which stage of the cell cycle focuses on cell growth, replication of organelles and the accumulation of material for synthesizing DNA? Which of the following is a true statement concerning meiosis in males and females? Which of the following statements about nondisjunction is FALSE? Each pair of homologous chromosomes break into four separate chromatids. B ) All siblings from the same parents are identical to each other and demonstrate traits that are exactly halfway between their parents ' traits . c. reproduction in some species It is nevertheless necessary for two females to court and for one to assume the posture of a male to stimulate the female to produce eggs. in the human male, sperm cells are produced in the..and in the females, the egg cells are produced in the. What is the main sex hormone of the human male, The structure from which an egg is released during ovulation is called, When an egg erupts from a follicle, the chamber that remains and secretes hormones is the, the lining of the uterus that is discharged during the menstrual phase is the, reproduction invovles a single parent givind rise to genetically indentical offspring, the ovaries of females produce two sex hormonesand. List five examples of electromagnetic radiation. Species X reproduces asexually by fission and species Y reproduces sexually. Species X reproduces asexually by fission and species Y reproduces sexually. In some organisms, mitosis occurs without cytokinesis. Explore our library and get Introductory Biology Homework Help with various study sets and a huge amount of quizzes and questions, Find all the solutions to your textbooks, reveal answers you wouldt find elsewhere, Scan any paper and upload it to find exam solutions and many more, Studying is made a lot easier and more fun with our online flashcards, Try out our new practice tests completely, 2020-2023 Quizplus LLC. C. Triploid and polyploid Which does NOT occur in meiosis? answer choices . Primary nondisjunction occurs during meiosis II when the sister chromatids fail to separate and both daughter chromosomes go in the same gamete. Which statement is true about the life cycle of plants but not of animals? What is the probable evolutionary mechanism for this occurring? In exercise, a function and an interval of its independent variable are given. Define the following terms: crossing over, synapsis, gamete, autosome, No fertilization can occur, and the eggs develop into female lizards. In the tetrad stage, the number of chromosomes is equal to the number of DNA molecules. nad+ is reduced to form nadh. B) immediately after the sperm penetrates the secondary oocyte All of the following are true concerning Down Syndrome EXCEPT A. it is caused by autosomal trisomy 21 B. in 23% of cases, the sperm contributes the extra chromosome C. it is the most common trisomy in humans D. chances of a woman having a child with Down Syndrome decreases with her age, The correct number of chromosomes in a species is known as aneuploidy. A) gametogenesis.B) oogenesis.C) pangenesis.D) spermatogenesis. Which of the following is a true statement concerning meiosis in males and females? The genus Lacerta is composed of a species of lizards that are female and do not mate. C. pangenesis. (B) There is no replication of chromosomes between meiosis I and meiosis II. the inclusion of the centromere in the inversion, Which of the following terms can be used to describe Down syndrome? cross-over occurs during prophase I. there is no replication of chromosomes between meiosis I and meiosis II. the daughter cells have only half the chromosomes of the parent cell. Males provide more genes in sperm than females provide in eggs. False The correct number of chromosomes in a species is known as euploidy. interphase involves DNA replication and interkinesis does not, meiosis occurs during all of the following EXCEPT Which of the following events does not occur during telophase. Which statement is NOT true about homologues in meiosis I? B) They orient the sperm toward the egg. Select all that apply. Meiosis occurs during gametogenesis, oogenesis, and spermatogenesis. (b). The two cells produced in meiosis I go through the events of meiosis II in synchrony. Include units in your answer. Use Figure 2.192.192.19 to determine which type of electromagnetic wave has this frequency. One main reason would be. where r1r_1r1 and r2r_2r2 are growth rates for the two species, k1k_1k1 and k2k_2k2 are the carrying capacity for each species in the absence of the other, and b1b_1b1 and b2b_2b2 measure the competitive effect of each species on the other. Which of the following is NOT true concerning mitosis? A. crossing over B. nuclear envelope dissolves C. chromatin condenses into chromosomes D. centrioles appear in animal cells, During _______________ the homologous chromosome pairs separate in a random fashion leading to genetic diversity among the offspring. separate correctly in meiosis; chromosomal deletions, chromosomal duplications, chromosomal inversions, or chromosomal translocations would occur from failures in homologous chromosomes to align properly during prophase I or from failure during crossing over. True or False. The cell formed through fertilization of an egg by a sperm is called a/an. b. the production of gametes is known as gametogensis The polar body is. Oogenesis does not involve an equal division of cell contents. Meiosis is a type of cell division that starts with a diploid, 2 n cell. b) homologous pairs separate during meiosis I. c) one cell produces four cells. Cytokinesis does not follow "endomitosis" that results in a tetraploid cell. C) A fertilized egg is known as a zygote. bivalents will form. Q. Meiosis I DNA replication precedes the start of meiosis I. Prophase I. A) All stages of meiosis follow DNA replication. the centrioles move toward opposite poles. c. fertilization In meiosis, the daughter cells are genetically identical. B. They allow a reduction in chromosomes while preserving most of the cytoplasm for one egg. It is nevertheless necessary for two females to court and for one to assume the posture of a male to stimulate the female to produce eggs. All of the following events occur during normal meiosis except _______. a nonfunctional cell rudiment formed at the same time as an egg cell. Before the time of Gregor Mendel and genetics, sexual reproduction was thought to produce a blending or equal mixing of the parents' traits. Crossing over is a cellular process that happens during meiosis when chromosomes of the same type are lined up. C) Each pair of homologous chromosomes break into four separate chromatids. Extra copies of sex chromosomes are more easily tolerated in humans than extra copies of autosomes. C. This switch in mating behavior is the direct physical reflection of crossing-over. the cells produced at the end of meiosis are genetically identical to the parent cell. What is the specific term that describes the loss of a single chromosome (2n - 1)? B. oogenesis. Prophase I C) Meiosis produces four identical gametes, either egg or sperm. In human females, when is meiosis II completed? The cells produced at the end of meiosis contain half the number of chromosomes as the parent cell. (d) Hope. Verified Answer for the question: [Solved] Meiosis occurs during all of the following EXCEPT A) gametogenesis. Meiosis occurs in the primordial germ cells, cells specified for sexual reproduction and separate from the body's normal somatic cells. A. Cri du chat syndrome At the leptotene stage the chromosomes appear as long, thin threads. Sketch a phase plane diagram, similar to Figure 11. Which of these descriptions is associated with the luteal pahse of the uterine cycle? (4) Power of adaptability in diverse habitat. Only one of the four daughter cells becomes a functional gamete in spermatogenesis. If a cell contains 12 chromosomes at the end of meiosis I, how many chromosomes will the daughter cells contain at the end of meiosis II? A. independent assortment B. metaphase C. anaphase II D. mitosis, If the diploid number of chromosomes for an organism is 52, what will the haploid number of chromosomes be? (D) Synapsis occurs during prophase. c. spermatogenesis Interkinesis is different from interphase in which way? B) Homologous chromosomes separate and go to different daughter cells. offspring inherit essentially 50% of their genes from each parent, but two sibling offspring may share with each other from zero to 23 chromosomes in common from each parent, and further variation may occur due to crossing-over. Not Graded. (2) Nature of self pollination. C. carry genes for the same traits. True or False, During the formation of an embryo, the hollow ball of cells having a fluid-filled cavity is called a, Gastrulation leads to formation of the tissue stage of development called, The opening that leads to the archenteron of an embryo is called, Theis the solid ball of cells that develop as a result of cleavage, David N. Shier, Jackie L. Butler, Ricki Lewis, Charles Welsh, Cynthia Prentice-Craver, David Shier, Jackie Butler, Ricki Lewis. Consider that all other relevant characteristics are similar between these species. c. the cell may undergo apoptosis e. only B and C are correct. C) Interphase involves DNA replication and interkinesis does not. When the environment gradually changes, then. Is designed to receive only sperm from the same species. If a cell contains 12 chromosomes at the end of meiosis I, how many chromosomes will the daughter cells contain at the end of meiosis II? B. Spindle formation, centrosome migration, the fragmentation of the nuclear envelope, and the disappearance of the nucleolus are characteristic of prophase I of meiosis but not prophase of mitosis. During which stage of meiosis does crossing over occur? This statement is: - True During meiosis, cells undergo two rounds of nuclear and cell division, but only one round of DNA synthesis. c. there is no nuclear membrane to break down and rebuild The overall function of meiosis includes gamete production, chromosome reduction and creating genetic variation. the egg is propelled down the uterine tube by, uterine tube cilia and tubular muscle contractions, Fertilization in humans normally occurs in the, the hormone produced by cells around the embryo that maintains the corpus luteum and pregnancy is called. When the environment changes, then. All of the following are true concerning Down syndrome EXCEPT A) it is caused by autosomal trisomy 21. The polar body is A. another name for an egg cell. E) It separates the homologous chromosomes. We would therefore expect to find 56 chromosomes in the skin cell of an elephant. Describe how errors in chromosome structure occur through inversions and translocations. At the cellular level is the opposite of reproduction since it involves two cells fusing to become one. A) prophase I immediately after the sperm penetrates the secondary oocyte, All of the following animals are likely to undergo parthenogenesis EXCEPT. D. Homologues exchange genetic material between non-sister chromatids. The polar body is There are two main types of cell divisions: meiosis and mitosis. B. Meiosis stops after meiosis I and does not proceed to meiosis II. c. CH3COOH\text{CH}_{3}\text{COOH}CH3COOH and NaCH3COO\text{NaCH}_{3}\text{COO}NaCH3COO. Which of the following accurately describe anaphase 1 and anaphase 11? A) The gametes are the haploid phase of the animals' life cycle. The correct number of chromosomes in a species is known as aneuploidy. The desert is relatively uniform and there is little advantage to maintaining variation, but the animal has not been able to completely evolve away from its heritage of sexual reproduction. a. growth of the organism and tissue repair A. the nucleolus can no longer be seen. e A and B only, The function of mitosis is Which stage is most associated with a cell that is unable to divide again such as a muscle or nerve cell? Nondisjunction: Meiosis is the fundamental process that is behind sexual reproduction with the formation of offspring that are genetically unique from each other and ever from their parents.. Why do polar bodies form? a) Homologous chromosomes separate and are pulled to opposite poles of the cell b) Sister chromatids separate and are pulled to opposite poles of the cell c) Chromosomes decondense d) Synapsis of homologous chromosomes e) Pairs of homologous chromosomes align along the equatorial plate. E) Neither A, B, or C. All of the above involve mitosis. D. It is the first stage of mitosis. A) Bivalents will form. A. All are functional. It could be said that males are able to provide gametes with more genetic diversity than females for reproduction. The mechanics of meiosis II is similar to mitosis, except that each dividing cell has only one set of homologous chromosomes. B) oogenesis. A) gamete production. What structure is produced during meiosis 1 in male? True or False, binary fission in bacteria differs from mitosis because B. Interkinesis is the stage that precedes a prophase stage. The ovaries, oviducts, and uterus are very small and underdeveloped. A) Interkinesis occurs after a cell finishes a nuclear division. Monosomy occurs when an individual has only one of a particular type of chromosome. The chromosomes that pair up during meiosis, are called _____ chromosomes. The species is probably going extinct. D) 24. A. B) The gametes are the diploid phase of the life cycle. A) species X and Y will have an equal chance of surviving. A. prophase I of meiosis I B. anaphase I of meiosis II C. telophase I of meiosis I D. prophase II of meiosis II E. anaphase II of meiosis I. Homologous chromosomes are similar in all of these characteristics EXCEPT: A. similar in size. c. a fertilized egg is known as a zygote Which of the following would NOT contribute to genetic variation? Find f(x)f (x)f(x) and V(x, y). C. The products of the haploid phase of the life cycle are larger than those of the diploid phase. C. Cytokinesis does not follow "endomitosis" that results in a tetraploid cell. Homologous chromosomes are similar in all of these characteristics EXCEPT. D) Homologous chromosomes exchange genetic material between nonsister chromatids. G1 phase: The period prior to the synthesis of DNA. All of the choices are true about sexual reproduction. Spermatogenesis is the process of generation of male reproductive cells from spermatogonial stem cells in the seminiferous epithelium of the testis. Answer the following questions concerning the following figure In humans, the haploid cells made in meiosis are sperm and eggs. In meiosis, the reduction from 2n to n is accomplished by sister chromatids splitting apart and migrating to opposite daughter cells. luteinizing hormone (LH) triggers ovulation in females. It is only during Metaphase II and Metaphase that the state of the chromosomes is the same. (1) Property of producing large number of seeds. (a) Denial. D) chances of a woman having a child with Down syndrome decrease as she gets older. D) formation of bivalents. All of the following events occur during normal meiosis except _______. In meiosis, there are four daughter cells. What is the probable evolutionary mechanism for this occurring? 14. Of C. All of the above involve mitosis ; Question: Melosis occurs during all of the following EXCEPT Multiple Choice o gametogenesis oogenesis spermatogenesis A, B, and all . Normal, because they have a normal amount of genetic material, Pair the disease with its chromosomal abnormality The correct number of chromosomes in a species is known as aneuploidy. Only one of the four daughter cells becomes a functional gamete in spermatogenesis. A) crossing-over in prophase I of meiosis There is one chance in 23 of getting identical sets of chromosomes from one parent , times two because there are two parents ; therefore , two siblings out of 46 will be identical except for the extent of crossing - over . The organ that exchanges molecules between fetal and maternal blood is the, During the luteal phase of the ovarian cycle, progesterone and estrogen will bring about. A. Trisomic and polyploid A prophase B. anaphase C. When the environment changes, then B. B. reduction of chromosome number (from 2N to N). Anaphase I occurs in a haploid cell while anaphase II occurs in a diploid cell. (b) Depression. D) All of the choices are sources of genetic variation. D) All of the choices are true. Meiosis occurs during all of the following EXCEPT A. gametogenesis. As described above, homologous chromosomes are like pairs of non-identical twins. T/F Duplications and deletions can be detected during meiosis by the presence of extrachromosomal loops that do not pair properly with their homolog. A. Cytokinesis A) In meiosis, daughter cells are haploid. Identify which event will occur during Prophase I of meiosis but does not occur during prophase of mitosis. D) testes Suppose that k1=6,k2=4,b1=2k_1=6, k_2=4, b_1=2k1=6,k2=4,b1=2, and b2=1b_2=1b2=1. Meiosis is the process by which gametes are produced. A) prophase I D Interkinesis can be variable in length. The function does not include growth of the individual. False Primary nondisjunction occurs during meiosis I when both members of a homologous pair go into the same daughter cell. Mitosis and meiosis are both types of cell division. Which of the following is NOT a difference between anaphase I and anaphase II? A) at ovulation C. Interphase involves DNA replication and interkinesis does not. during which stage of meiosis does homologue separation occur? Homologous chromosomes move to opposite poles during meiosis I so the number of sets of chromosomes in each nucleus-to-be is reduced from two to one. Disorders of chromosome number include the duplication or loss of entire chromosomes, as well as changes in the number of complete sets of chromosomes. A. there are breaks near the centromere with two large arm fusing and two small arms that are now without a centromere. They undergo "endomitosis" where one extra chromosome replication results in a tetraploid cell before meiosis begins. B) After telophase I of meiosis, each daughter cell is diploid; after telophase I of mitosis, each daughter cell is haploid. To what does the term chiasma refer? C) telophase I A. Extra copies of sex chromosomes are more easily tolerated in humans than extra copies of autosomes. 6 C. 12 D. 24, During which stage of meiosis does crossing-over occur? Homologous chromosomes are similar in size, carry genes for the same traits, and are similar in shape and centromere location. Which of the following is/are true about sexual reproduction? A) it is caused by autosomal trisomy 21. Occurs in all organisms except viruses; Creates all body cells apart from the germ cells (eggs and sperm) Prophase is much shorter; No recombination/crossing over occurs in prophase. B.:1795716 . A) gametogenesis. Meiosis I. Meiosis is preceded by an interphase consisting of the G 1, S, and G 2 phases, which are nearly identical to the phases preceding mitosis. In this phase, the cell increases in mass in preparation for cell division. A lattice holds the members of a bivalent together in such a way that the RNA of the non-sister chromatids is aligned. The cell formed through fertilization of an egg by a sperm is called a/an A. gamete. B) 48 A change in the chromosome number resulting from nondisjunction is called euploidy. The cell formed after fertilization of an egg by a sperm is called a(n). The third way that meiosis generates genetic diversity is through the separation of homologous chromosomes into the gametes. D similar in shape and location of the centromere. E) telophase I, During which stage of meiosis do the homologous chromosomes separate? a. the DNA has not completed replication. 6. Correct answers: 1 question: All of the following occur during the krebs cycle except: i. acetyl-coa combines with oxaloacetate to form citrate. Gastrulation is the first major process that occurs during prenatal development. cells becoming specialized in structure and function, the neural tube of vertebrates develops during morphogensis of the nervous system by the. C) In mitosis, there are two daughter cells. A primary spermatocyte has 64 chromosomes. The haploid cells are genetically different from each other due to crossing over in Prophase I and independent assortment in Anaphase I. It should not be necessary to look at a table of actual electronegativity values. B. All Rights Reserved. b.) (3) Domestication by man. C. pangenesis. C. It happens in all tissues except the brain and spinal cord. Inherited disorders can arise when chromosomes behave abnormally during meiosis. B. sperm cell. a. B. Monosomy occurs when an individual has only one of a particular type of chromosome. Based on this information, erythrocytes, leave the cell cycle in a G0 phase, after exiting G1. Meiosis I. A. the process of fertilization B. the life cycle of a fungus C. the process of crossing-over D. a structure that holds together homologues during crossing-over E. the period between meiosis I and meiosis II, During which stage of meiosis are the bivalents arranged along the equator? During which stage of meiosis does crossing-over occur? D. the cell produced when fertilization occurs. C) pangenesis. Identify which event will occur during Prophase I of meiosis but does not occur during prophase of mitosis. True or False, A change in the chromosomes number resulting from nondisjunction is called euploidy In meiosis, the daughter cells are genetically identical. B) It increases the likelihood that daughter cells contain different genetic material. A change in the chromosome number resulting from nondisjunction is called euploidy. The gametes are the diploid phase of the life cycle. It is the first stage of mitosis. Question 12: An elephant gamete has 28 chromosomes in it. \end{aligned} Sister chromatids line up and separate into individual chromosomes. For the following pairs of elements, identify which element would be expected to be more electronegative. Identify which event will occur during prophase I of meiosis but does not occur during prophase of mitosis.