Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Textbook Question
Chapter 41, Problem 4CT
Occasionally more than one sperm penetrates and enters a human secondary oocyte. The result is formation of a multiple spindles and disruption of the first mitotic division. Explain why the presence of multiple sperm has this lethal disruptive effect.
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Chapter 41 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 41 - Stuck Sperm Cells lining the epididymis secrete a...Ch. 41 - Prob. 2DAACh. 41 - Prob. 3DAACh. 41 - Prob. 4DAACh. 41 - Sexual reproduction ___ . a. requires formation of...Ch. 41 - The ___ is a genetic dead end. a. polar body b....Ch. 41 - Prob. 3SQCh. 41 - Prob. 4SQCh. 41 - During a menstrual cycle, a midcycle surge of...Ch. 41 - Prob. 6SQ
Ch. 41 - Prob. 7SQCh. 41 - Male germ cells divide by meiosis inside the...Ch. 41 - A male attains an erection when ___ . a. muscles...Ch. 41 - Prob. 10SQCh. 41 - Prob. 11SQCh. 41 - Prob. 12SQCh. 41 - Match each disease with the type of organism that...Ch. 41 - Match each structure with its description. ____...Ch. 41 - Match each hormone with its source. ____ FSH and...Ch. 41 - Prob. 1CTCh. 41 - Fraternal twins are nonidentical siblings that...Ch. 41 - Some sperm mitochondria enter an egg during...Ch. 41 - Occasionally more than one sperm penetrates and...
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- Describe the final cellular products produced when a primary oocyte undergoes meiosis (I and II) in human females. four haploid oocytes 1 diploid oocyte and 3 polar bodies 1 haploid oocyte and 2 polar bodies two genetically identical daughter cells four genetically identical daughter cellsarrow_forwardHow many chromosomes would an oocyte contain if during anaphase II, the chromatids of one chromosome did not separate?arrow_forwardIf a single diploid somatic cell with 18 chromosomes undergoes meiosis and produces sperm, the result will be _________ sperm, each with _________ chromosomes. (Provide two numbers.)arrow_forward
- Differentiate telophase I vs. telophase IIarrow_forwardWhich mechanism prevents an ovum from being fertilized by multiple sperm cells? Select one: a. When more than a single sperm cell fuses with the plasma membrane, multiple zygotes can form, leading to the conception of twins or triplets. b. When a sperm fuses with the plasma membrane of the egg, depolarization of the membrane occurs. c. Once a sperm penetrates the jelly-like coating of the egg, no other sperm cells can penetrate the coating. d. The egg can only survive in the Fallopian tube for 24 hours as it does not have mitochondria to produce energy.arrow_forwardDraw a schematic diagram showing spermatogenesis vis-à-vis oogenesis. Label the stage of development and chromosome number of daughter cells at the following levels of maturation: (a) mitotic proliferation (b) meiosis I and II (c) maturation. Table 2: Spermatogenesis vis-à-vis Oogenesis Spermatogenesis Oogenesisarrow_forward
- A classical experiment studying the fate determination of stem cells in the developing embryo uses the transplantation of somites from one organism to another. In such an experiment, a scientist transplanted somites 20, 21, and 22 from the right side of the neural tube from five-day-old developing quail embryos into chick embryos. The transplantation was performed in two orientations so that the order of the somites was sometimes reversed. Use the passage to answer the question. Suppose that somite stem cells commit to their cell fates by three days post fertilization. Which result would be MOST likely in the chick embryos receiving somites transplanted in the reverse order? A. The organs arising from quail somites develop in a normal order because local signaling molecules appropriately pattern the developing organs. B. The organs arising from quail somites develop in a normal order because transcriptional programs activated in the nucleus cannot be reversed.…arrow_forwardA classical experiment studying the fate determination of stem cells in the developing embryo uses the transplantation of somites from one organism to another. In such an experiment, a scientist transplanted somites 20, 21, and 22 from the right side of the neural tube from five-day-old developing quail embryos into chick embryos. The transplantation was performed in two orientations so that the order of the somites was sometimes reversed. Use the passage to answer the question. Observations of the developing chick embryo reveal that skeletal muscles develop from the transplanted somites even though motor neurons innervating those muscles arise from chick neural crest cells. Based on these observations, what is MOST likely true? A. Neural crest cells differentiate into somites. B. Neural crest cells fuse with developing somite cells. C. Neural crest cells develop from migrating somite cells. D. Neural crest cells send projections into developing…arrow_forwardA classical experiment studying the fate determination of stem cells in the developing embryo uses the transplantation of somites from one organism to another. In such an experiment, a scientist transplanted somites 20, 21, and 22 from the right side of the neural tube from five-day-old developing quail embryos into chick embryos. The transplantation was performed in two orientations so that the order of the somites was sometimes reversed. Use the passage to answer the question. As the somite cells develop into muscles, regular depolarizations in the muscles are required for the brain to properly form circuits with developing organs. Based on this observation, which prediction is MOST likely true? A. The muscles release neurotransmitters to stimulate the innervating neurons. B. The innervating neurons release neurotransmitters to stimulate the muscles. C. The muscles release hormones to stimulate the innervating neurons. D. The innervating neurons…arrow_forward
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