BIOLOGY:CONCEPTS+..W/ACCESS+LM
4th Edition
ISBN: 9781260715804
Author: Hoefnagels
Publisher: MCG
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Chapter 35, Problem 8WIO
Summary Introduction
To explain:
The reason behind more point mutations during spermatogenesis and more chromosomal abnormalities appearing in the egg cells.
Concept introduction:
The process of formation of haploid gametes is known as gametogenesis. In this process, the diploid or haploid cells undergo cell division and form gametic cells. The gametogenesis might involve meiosis (in case of diploids) or mitosis (in case of haploids). The spermatogenesis is the process of formation of sperms or male gametes. The oogenesis is the process of formation of an ovum or the female gametes
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In the process of Oogenesis in animal cells, will the genotype of the second polar body (derived from meiosis II) always be identical to that of the ootid? Why or why not?
During meiosis in male mammals, sex chromosomes segregate to produce two types of sperm: X‑bearing sperm and Y‑bearing sperm.
True or false?
Which of the following correctly describes the gametes that will form as a result of nondisjunction during anaphase II in a human male?
Select one:
a. Two sperm with chromosomes and two sperm with chromosomes
b. Two sperm with chromosomes, one sperm with chromosomes, and one sperm with chromosomes
c. Four sperm with chromosomes
d. Four sperm with chromosomes
Chapter 35 Solutions
BIOLOGY:CONCEPTS+..W/ACCESS+LM
Ch. 35.1 - Prob. 1MCCh. 35.1 - Prob. 2MCCh. 35.1 - Prob. 3MCCh. 35.2 - Prob. 1MCCh. 35.2 - Prob. 2MCCh. 35.2 - Prob. 3MCCh. 35.2 - Prob. 4MCCh. 35.3 - Prob. 1MCCh. 35.3 - Prob. 2MCCh. 35.3 - How do hormones regulate the ovarian and menstrual...
Ch. 35.4 - Prob. 1MCCh. 35.4 - Prob. 2MCCh. 35.4 - Prob. 3MCCh. 35.5 - What are the events of fertilization?Ch. 35.5 - What are the relationships among the zygote,...Ch. 35.5 - What is implantation, and when does it occur?Ch. 35.5 - Prob. 4MCCh. 35.5 - Prob. 5MCCh. 35.5 - What are the events of the second and third...Ch. 35.5 - Prob. 7MCCh. 35.6 - Prob. 1MCCh. 35.6 - Prob. 2MCCh. 35.6 - Prob. 3MCCh. 35.7 - Prob. 1MCCh. 35.7 - Prob. 2MCCh. 35 - Prob. 1MCQCh. 35 - Which hormones play central roles in both male and...Ch. 35 - Prob. 3MCQCh. 35 - Why can't a fertilized polar body develop into a...Ch. 35 - Prob. 5MCQCh. 35 - Prob. 6MCQCh. 35 - What is the correct order of structures to develop...Ch. 35 - Prob. 8MCQCh. 35 - A baby born four weeks before its due date is most...Ch. 35 - A chemical that can cause a birth defect is a a....Ch. 35 - What is differentiation? How do protein gradients...Ch. 35 - Prob. 2WIOCh. 35 - Prob. 3WIOCh. 35 - Prob. 4WIOCh. 35 - What are the functions of LH and FSH in males and...Ch. 35 - Prob. 6WIOCh. 35 - Prob. 7WIOCh. 35 - Prob. 8WIOCh. 35 - Is each of the following cell types haploid or...Ch. 35 - Prob. 10WIOCh. 35 - Prob. 11WIOCh. 35 - What would happen if two sperm fertilized the same...Ch. 35 - Prob. 13WIOCh. 35 - Prob. 14WIOCh. 35 - Prob. 15WIOCh. 35 - Prob. 16WIOCh. 35 - Prob. 17WIOCh. 35 - Prob. 18WIOCh. 35 - Prob. 19WIOCh. 35 - Most physicians clamp and cut the umbilical cord...Ch. 35 - Prob. 21WIOCh. 35 - Prob. 22WIOCh. 35 - What kinds of studies and information would be...Ch. 35 - Review the Survey the Landscape figure in the...Ch. 35 - Add ovulation to the concept map. What hormonal...Ch. 35 - Prob. 3PITCh. 35 - Add the terms placenta, follicle, polar body,...
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- The Human Reproductive System Discuss and compare the products of meiosis in human females and males. How many functional gametes are produced from the daughter cells in each sex?arrow_forwardWhy is it necessary for gametogenesis to reduce the chromosome number of the sex cells by one-half?arrow_forwardGiven that a diploid cell will undergo meiosis and give rise to gametes (egg or sperm cells), where in the body would you expect this cell to be located?arrow_forward
- In a possible future scenario, male fertility drops to zero, but, luckily, scientists develop a way for women to pro-duce babies by virgin birth. Meiocytes are converted di-rectly (without undergoing meiosis) into zygotes, which implant in the usual way. What would be the short- andlong-term effects in such a society?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_forwardMale honeybees, which are haploid, produce sperm by meiosis.Explain what unusual event (compared with other animals) mustoccur during spermatogenesis in honeybees to produce sperm.Does this unusual event occur during meiosis I or meiosis II?arrow_forward
- Which of the following correctly describes the gametes that will form as a result of nondisjunction during anaphase II in a human male? a. Two sperm with 24 chromosomes and two sperm with 22 chromosomes b. Two sperm with 23 chromosomes, one sperm with 22 chromosomes, and one sperm with 24 chromosomes c. Four sperm with 24 chromosomes d. Four sperm with 22 chromosomesarrow_forwardDuring spermatogenesis, which of the following options describes when cytokinesis would occur? Following anaphase I Following metaphase II Following telophase I Following telophase IIarrow_forwardWhy are newborns with an abnormal sex chromosome number more likely to survive than those with an abnormal autosome number?arrow_forward
- If cell division during gametogenesis were non meiotic, what would be its consequences to future generations of diploid organisms?arrow_forwardA sperm cell from the fruit fly Drosophila melanogaster contains four chromosomes. How many chromosomes would be present in a spermatogonial cell about to enter meiosis? How many chromatids would be present in a spermatogo- nial cell at metaphase I of meiosis? How many would be present at metaphase II?arrow_forwardDescribe the events taking place during meiosis? What are the different phases? What is the chromosomal content of the final product? Why must this occur to make a chromosomally viable human?arrow_forward
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