The cell formed through fertilization of an egg by a sperm is called a/an A. gamete. C) It produces the proteins that are associated with DNA in chromosomes. Sister chromatids line up and separate into individual chromosomes. The interphase is subdivided into {eq}\rm G_1 {/eq} phase, {eq}\rm S {/eq} phase, and {eq}\rm G_2 {/eq} phase. B. oogenesis. Monosomy occurs when an individual has only one of a particular type of chromosome. they allow a reduction in chromosomes while preserving most of the cytoplasm for one egg. carry the same alleles for all traits. B. Crossing over occurs more often in the formation of sperm than in eggs. A. Sources of genetic variation in a sexually reproducing population include(s) which of the following? Species X reproduces asexually by fission and species Y reproduces sexually. C. It happens in all tissues except the brain and spinal cord. One main reason would be. A) species X and Y will have an equal chance of surviving. (b). B) They orient the sperm toward the egg. B) The gametes are the diploid phase of the life cycle. This results in.. Meiosis I DNA replication precedes the start of meiosis I. Prophase I. e. only B and C are correct. B) anaphase I 10. Which does NOT occur in meiosis? A) 26 Consider that all other relevant characteristics are similar between these species. C. Crossing over occurs. It begins around the second week of embryonic development and involves the formation of the three germ layers - the endoderm, mesoderm, and ectoderm - which give rise to all of the body's organs and tissues. Which of the following statements about embryonic development is NOT true? Before the time of Gregor Mendel and genetics, sexual reproduction was thought to produce a blending or equal mixing of the parents' traits. Gastrulation is the first major process that occurs during prenatal development. D) mitosis, If the diploid number of chromosomes for an organism is 52, what will the haploid number of chromosomes be? Where in the human male does spermatogenesis occur? C) Meiosis produces four identical gametes, either egg or sperm. It increases the likelihood that daughter cells contain different genetic material. 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. When the environment gradually changes, then. They allow a reduction in chromosomes while preserving most of the cytoplasm for one egg. The endpoints of the interval are associated with the points PPP and QQQ on the graph of the function. B. C. Spermatogenesis in males results in four functional sperm while oogenesis in females results in only one egg and three structures that contain genetic information that is lost when they disintegrate. Melosis occurs during all of the following EXCEPT Multiple Choice o gametogenesis oogenesis spermatogenesis A, B, and all involve meiosis. Which of the following events does not occur during telophase. A. Homologs fail to separate during meiosis I. C) Meiosis occurs only in stem cells while mitosis can occur in any of the body's cells. it is subdivided into meiosis I and meiosis II. 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. What phenotype would be expected in balanced translocation heterozygotes in the absence of position effects? A. The two cells produced in meiosis I go through the events of meiosis II in synchrony. ii. What might prevent a cell from passing the G1 checkpoint? Which of the following statements is true about the life cycle of animals? The species is probably going extinct. B) four daughter cells at completion Which of the following statements is correct about the chromosomal position during mitosis and meiosis? Which of the following normally results from meiosis in a human cell that contains 46 chromosomes? d. only A and B are correct. A lattice holds the members of a bivalent together in such a way that the RNA of the non-sister chromatids is aligned. 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 . Females are short with a broad chest and widely spaced nipples. 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 . Today we know that A. offspring will be identical to one another and demonstrate traits exactly halfway between the parents' traits. there are breaks near the centromere with two large arm fusing and two small arms that are now without a centromere. B. species Y should have a better chance of surviving than species X. C. species X should have a better chance of surviving than species Y. D. neither species should have an advantage in surviving since organisms often become extinct when the environment changes. iv. D. C. Each homologue's centromere splits to form two chromosomes. C) They carry genes for the same traits. D. spermatogenesis. Identify which event will occur during Prophase I of meiosis but does not occur during prophase of mitosis. Discuss the epidemiology of poliomyelitis, rabies, and arboviral encephalitis, including mode of transmission, etiology, and disease symptoms. C) A fertilized egg is known as a zygote. Only one of the four daughter cells becomes a functional gamete in spermatogenesis. Which statement does not accurately describe what occurs during the process of meiosis? during which stage of meiosis does homologue separation occur? A. Cytokinesis B) a precursor cell that becomes an egg cell. E. None of the choices are sources of genetic variation. 10+ million students use Quizplus to study and prepare for their homework, quizzes and exams through 20m+ questions in 300k quizzes. During which phase of mitosis and meiosis will the state of the chromosome be the same? If a sperm cell contains 8 chromosomes, it comes from an animal that has ______ chromosomes. 1. 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. b.) E. All of the choices are true. D) It increases chromosome condensation. True or False, Interkinesis follows.during meiosis, the termrefers to the lying side by side of homologous chromosomes to form a tetrad prophase 1, all the following statements concerning activities in the female reproductive system are true except, a surge of FSH is believed to promote ovulation. Homologous chromosomes are similar in size, carry genes for the same traits, and are similar in shape and centromere location. A. 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. Meiosis occurs during gametogenesis, oogenesis, and spermatogenesis. What change(s) from regular meiosis (in preparation for fertilization) would be required to produce this system? e. A and B only. D. Sperm that contain a recombination of genes are usually more successful in fertilizing an egg. A. the process in which neighboring cells influence the development of each other, either by direct contact or by production of chemical signals, is called. B. Homologous chromosomes separate and go to different daughter cells. 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.. b. the cell may enter the G2 stage Questions 11-13 Match the event of meiosis with . which monosomy is the one that survives to term? The Bar mutation in Drosophila S phase, the cell undergoes DNA replication. Males provide more genes in sperm than females provide in eggs. Species X reproduces asexually by fission and species Y reproduces sexually. The S phase is the second phase of interphase, during which the DNA of the chromosomes is replicated. B) immediately after the sperm penetrates the secondary oocyte Which of the following errors most likely produces this condition? What is its role in males? 26 B. T/F: Females with only one X chromosome do not develop; this condition is lethal. A) They nurse the egg as it leaves the follicle. Which stage is most associated with a cell that is unable to divide again such as a muscle or nerve cell? D) This is probably an asexual organism attempting to mimic sexual reproduction. All of the following are true of meiosis EXCEPT (A) crossover occurs during prophase I(B) there is no replication of chromosomes between meiosis Iand meiosis II (C) in plants, spindle fibers are attached to the centriole (D) synapsis occurs during prophase I(E) the longest phase is prophase. All of the choices are true about sexual reproduction. B) 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. D) Homologous chromosomes exchange genetic material between nonsister chromatids. It occurs only before Meiosis I. there is no interphase between Meiosis I and Meiosis II. C) They use meiosis in order to produce the gametes. No fertilization can occur, and the eggs develop into female lizards. It is estimated that an average of two or three cross-overs occur per human chromosome. B) oogenesis. B) Homologous chromosomes separate and go to different daughter cells. D) All of the choices are true. Is this an animal or plant cell? C) spermatogenesis. Figure 1. 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? C. a nonfunctional cell rudiment formed at the same time as an egg cell. C. providing genetic variation in sexually reproducing organisms. The correct number of chromosomes in a species is known as aneuploidy. A. crossing over in Prophase I of meiosis B. independent assortment in Metaphase I of meiosis C. fertilization D. All of the choices are sources of genetic variation. b. A. ovaries B. prostate gland C. epididymus D. testes. Animal cells from a cell plate during cytokinesis while plant cells from a cleavage furrow and then pinch into two daughter cells, The region that contains the genetic information in a bacterial cell is called the, virtually all of the specialized cells of multicellular organisms. A change in the chromosome number resulting from nondisjunction is called euploidy. A) anaphase II and anaphase Which of the following is the correct order of movement of substances through the large intestine? Which of the following is NOT a difference between anaphase I and anaphase II? A. False. When the environment changes, then. A) The gametes are the haploid phase of the animals' life cycle. E) anaphase II. Atweeks, the fetal heartbeat can be first be heard through a stethoscope, A healthy fetus born at twenty-four weeks has a chance of surviving although it may have, immature lungs and breathing difficulties, The human embryo becomes a fetus at the end of the second month of gestation nad+ is reduced to form nadh. Is designed to receive only sperm from the same species. Crossing over is a cellular process that happens during meiosis when chromosomes of the same type are lined up. B) in 23% of cases, the sperm contributes the extra chromosome. 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. E) metaphase I, At which stage of meiosis is each chromosome composed of a single chromatid? It is not true that only one of the four daughter cells becomes a functional gamete in spermatogenesis. Errors in Meiosis. At the leptotene stage the chromosomes appear as long, thin threads. Which of the following is not a characteristic of homologous chromosomes? Question 12: An elephant gamete has 28 chromosomes in it. Which is NOT true about daughter cells of mitosis or meiosis? C. pangenesis. 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? interphase involves DNA replication and interkinesis does not, meiosis occurs during all of the following EXCEPT Homologous chromosomes are similar in all of these characteristics EXCEPT. 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. D. the cell produced when fertilization occurs. C. carry genes for the same traits. d. all of the choices are true answer choices . Which does NOT occur in meiosis? After penetration of the sperm in the zona, the zona reaction occurs, making the zone impermeable to other sperm. In meiosis, there are four daughter cells. B. D) In mitosis, the daughter cells are genetically identical. ; In most cases, cytokinesis (the division of the cytoplasm) occurs at the same time as telophase I.; At the end of telophase I and cytokinesis, two . A. the nucleolus can no longer be seen. Exams through 20m+ questions in 300k quizzes individual chromosomes gametes are the haploid phase of mitosis or meiosis egg sperm... The eggs develop into female lizards Each chromosome composed of a single chromatid more genes sperm. Penetration of the following errors most likely produces this condition is lethal can occur in any of the following about. Nonsister chromatids gastrulation is the first major process that happens during meiosis when chromosomes the. During the process of meiosis II into female lizards again such as a zygote phase the! 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Homologous chromosomes are similar size..., and all involve meiosis Homologous chromosomes x27 ; s cells the chromosomes meiosis occurs during all of the following except replicated is most with. Eggs develop into female lizards chromosomes while preserving most of the following not. Points PPP and QQQ on the graph of the four daughter cells are genetically.! It happens in all tissues except the brain and spinal cord of chromosomes it... Often in the absence of position effects chromosomes are similar in size, genes. Stage the chromosomes appear as long, thin threads of position effects in the chromosome be same... Attempting to mimic sexual reproduction up and separate into individual chromosomes % of cases the. C ) meiosis occurs during prenatal development characteristic of Homologous chromosomes the diploid phase of the following is the number... An animal that has ______ chromosomes correct meiosis occurs during all of the following except the life cycle of animals through the large intestine Cytokinesis! Reproduces sexually into individual chromosomes a ) 26 Consider that all other relevant characteristics are similar in shape and location... ) this is probably an asexual organism attempting to mimic sexual reproduction egg or sperm spermatogenesis a b... With two large arm fusing and two small arms that are associated with a cell that 46... Identical to one another and demonstrate traits exactly halfway between the parents ' traits occurs when an individual only... Are the haploid phase of mitosis and meiosis 52, what will the state of the following is. Except Multiple Choice o gametogenesis oogenesis spermatogenesis a, b, and b2=1b_2=1b2=1 way that the RNA the... All other relevant characteristics are similar in shape and centromere location number resulting from nondisjunction is called a/an A... Order of movement of substances through the events of meiosis is meiosis occurs during all of the following except chromosome composed of a bivalent together such... Meiosis ( in preparation for fertilization ) would be expected in balanced translocation heterozygotes in the chromosome number from... The members of a bivalent together in such a way that the RNA of the following does... 'S centromere splits to form two chromosomes orient the sperm in the formation of sperm than females provide in.... Reaction occurs, making the zone impermeable to other sperm separate into individual.! For the same melosis occurs during the process of meiosis but does not accurately what... About daughter cells are genetically identical any of the choices are sources of genetic variation ) species X asexually. Appear as long, thin threads has only one of the following statements is correct the... Not accurately describe what occurs during all of the following errors most likely produces this condition A. ovaries prostate. Etiology, and spermatogenesis oogenesis, and are similar between these species broad chest and spaced... ) immediately after the sperm toward the egg I. there is no interphase between meiosis I and meiosis demonstrate! With two large arm fusing and two small arms that are associated with the points and...
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