BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 51, Problem 2A
Which of the following is a major difference between spermatogenesis and oogenesis?
a. Spermatogenesis involves meiosis, and oogenesis involves mitosis.
b. Spermatogenesis is continuous, but oogenesis is variable.
c. Spermatogenesis produces fewer gametes per precursor cell than oogenesis.
d. All of these are significant differences between oogenesis and spermatogenesis.
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Which of the following statements is/are true?
A.
Spermatogenesis is an example of asymmetric cell division.
B.
The formation of a mature egg occurs through symmetric cell division.
C.
Spermatogenesis and oogenesis are both examples of asymmetric cell division.
D.
Spermatogenesis involves only symmetric cell division whereas oogenesis involves asymmetric cell division.
Which of the following stages of the fertilization process stimulates completion of meiosis II in the oocyte’s nucleus?
A. The sperm nucleus and egg nucleus combine to form the genetic material of the zygote
B. Sperm release enzymes to digest the protein layer of the secondary oocyte
C. The entry of a sperm into the secondary oocyte
D. The swimming of sperm from the vagina, through the uterus, and up to an oviduct
An individual has the chromosomal makeup XX and sexual differentiation proceeds normally. Which of the following would be the case?
a. Mullerian ducts will degenerate
b. Estrogen promotes development of the vagina
c. Anti-Mullerian hormone is present
d. Wolffian ducts will develop
e. There will be no formation of fetal testes
Chapter 51 Solutions
BIOLOGY
Ch. 51.1 - Prob. 1LOCh. 51.1 - Prob. 2LOCh. 51.1 - Prob. 3LOCh. 51.2 - Prob. 1LOCh. 51.2 - Prob. 2LOCh. 51.3 - Prob. 1LOCh. 51.3 - Prob. 2LOCh. 51.3 - Prob. 3LOCh. 51.4 - Prob. 1LOCh. 51.4 - Explain ovulation and the female reproductive...
Ch. 51.4 - Prob. 3LOCh. 51.5 - Prob. 1LOCh. 51.5 - Describe causes of infertility.Ch. 51 - Prob. 1DACh. 51 - Why might it be adaptive for an individual to be...Ch. 51 - Prob. 2IQCh. 51 - Why do you think the brain is affected when the...Ch. 51 - You have discovered a new organism living in tide...Ch. 51 - Prob. 2UCh. 51 - Prob. 3UCh. 51 - Which of the following structures is the site of...Ch. 51 - FSH and LH are produced by the a. ovaries. b....Ch. 51 - Prob. 6UCh. 51 - Mutations that affect proteins in the acrosome...Ch. 51 - In humans, fertilization occurs in the____, and...Ch. 51 - The testicles of male mammals are suspended in the...Ch. 51 - Prob. 1ACh. 51 - Which of the following is a major difference...Ch. 51 - Prob. 3ACh. 51 - Internal and external fertilization differ in that...Ch. 51 - Prob. 1SCh. 51 - Why do you think that amphibians and many fish...Ch. 51 - How are the functions of FSH and LH similar in...Ch. 51 - Prob. 4SCh. 51 - Why are all parthenogenic parents female?
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- Draw 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_forwardSpermatogonia divide by mitosis to form a new spermatogonium and a. a sperm. b. spermatids. c. a primary spermatocyte. d. zygotes.arrow_forwardWhat is the relationship between a primary spermatocyteand a spermatogonium?a. They are genetically identical.b. The spermatocyte is haploid and the spermatogonium is diploid.c. The spermatocyte has a flagellum; the spermatogonium does not.d. Both b and c are correctarrow_forward
- TC ARO YOUT C Which of the following events does not occur in spermatogenesis? (Circle the correct answer.) a. Diploid germ cells divide by mitosis to form diploid spermatogonia. b. Some of these spermatogonia divide by mitosis, forming haploid primary spermatocytes. c. The primary spermatocyte enters meiosis I, forming two haploid secondary spermatocytes. d. Two secondary spermatocytes undergo meiosis II, forming four spermatids. e. Spermatids mature into haploid sperm cells. PAO 7 In humans, spermatogenesis occurs in the seminiferous tubules of the testes. (Circle the correct answer.) True False . In plants, (Circle the correct answer.) a. the life cycle is different from that of animals in that plants alternate between diploid and haploid forms plants, and male gametes are produced in the anthers of flowersarrow_forwardThe diagram in Figure 1 shows a section through the mammalian testis. With reference to this diagram answer the following questions: FIGURE 1 (a) What percentage of each of the following types of cells would you expect to contain an X chromosome. Give a REASON for your answer in each case. i) type cell A ii) type cell B (b)Name the cell type labelled B which under goes mitosis. State the importance of mitosis in a mature testis.arrow_forwardIn humans:a. How many sperm develop from 100 primaryspermatocytes?b. How many sperm develop from 100 secondaryspermatocytes?c. How many sperm develop from 100 spermatids?d. How many ova develop from 100 primary oocytes?e. How many ova develop from 100 secondaryoocytes?f. How many ova develop from 100 polar bodies?arrow_forward
- In humans, sexual reproduction that produces an embryo, which then develops into a fetus, requires: a. Neither mitosis or meiosis b. Mitosis c. Both mitosis and meiosisarrow_forwardAn egg cell originally comes from an unspecialized diploid cell called a(an)… Group of answer choices A. secondary oocyte B. follicle C. primary oocyte D. oviduct E. oogoniumarrow_forwardSpermatocytes enter meiosis: A. Prior to the birth of the male infant. B. Withint daysof the birth of the male infant. C. When the male reaches puberty.arrow_forward
- One day while walking across campus, you see a female butterfly laying fertilized eggs, as shown in the image: 1. What type of ovarioles would the adult female butterfly have (hint: remember the Order of butterflies)? a. Panoistic ovarioles b. Plasmatocytic ovarioles c. Polytrophic ovarioles d. Collaterial ovarioles e. Telotrophic ovarioles 2. Which combination of mechanisms would the butterfly use to supply vitellogenins/maternal mRNAs to the developing oocytes? a. Follicular epithelial cells/trophocytes contained within the follicle b. Apical cells of germarium/nutritive cords c. Follicular epithelial cells/nucleus of the oocyte d. Prefollicular tissue in germarium/trophoocytes that remain in germarium 3. Which statement is correct with respect to the hormonal regulation of the development of the ovaries and vitellogenesis in the adult female butterfly? (Hint: the processes are the same as in a female mosquito.) a.…arrow_forwarda. What phase of meiosis is this cell undergoing? b. Identify the 3 things that are incorrect in terms of this cells structure and organization? c. Would this cell produce viable gametes? Why or why not.arrow_forwardWhat is the role of the SRY gene on the Y chromosome? a. Production of Mullerian hormone proteins b. Production of Anti-Mullerian hormone proteins c. Production of TDF (Testis-Determining Factor) d. Production of prostaglandin e. Production of testosteronearrow_forward
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