Answered: Describe the important processes…

Describe the important processes involved in gamete formation in testes and ovaries. What are the major differences between the two?

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter7: Development And Sex Determination

Section: Chapter Questions

Problem 7QP

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Describe the important processes involved in gamete formation in testes and ovaries. What are the major differences between the two?

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Describe the development of an oocyte from primordial follicle to when it is released at ovulation. How do hormones contribute to this progression? Describe the development of a spermatogonia to a spermatozoa. How do hormones contribute to this progression? What is the function of Sertoli and Leydig cells?
Oogenesis in the female results in one functional gamete—the egg, or ovum. What other cells are produced? What is the significance of this rather wasteful type of gamete production—that is, production of a single functional gamete instead of four, as seen in males?
At the end of the uterine cycle, there is a significant drop in the levels of LH, estrogen, and progesterone.This causes all of the following EXCEPT Select one: a. an increase in smooth muscle contractions of the uterus b. the start of menstruation, which breaks down the blood vessels and tissues formed during the follicular stage c. the maintenance of the corpus luteum to continue producing low levels of progesterone and estrogen d. a negative feedback loop to the pituitary to secrete more FSH and LH
a.) When in the female life cycle are oocytes produced? b.) Which human hormone(s) are thought to trigger ovulation?
Describe three physiologic functions that suppress ovulation when “the pill” is used as a method of contraception.
Name the stages of spermatogenesis from spermatogonium to spermatozoa. How do they differ in the number ofchromosomes per cell and chromatids per chromosome?
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List three ways in which oogenesis differs from spermatogenesis. Be specific!
Describe the process of ovulation, the hormone involved and what is released into the Fallopian tube (It isn’t just the oocyte) . At what stage of meiosis is the secondary oocyte? What is the life expectancy of the secondary oocyte?
Name the cell division that takes place during gametogenesis. What is its significance.
What stimulates the completion of meiosis Il in a secondary oocyte? O a) A surge of Follicle-Stimulating Hormone (FSH) following the degeneration of the corpus luteum O b) A surge of Luteinising Hormone (LH) on day 13 of the menstrual cycle O) Sperm-egg binding at fertilisation d) Sperm-zona pellucida binding at fertilisation
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