EBK BIOLOGY
6th Edition
ISBN: 8220106777640
Author: Maier
Publisher: PEARSON
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Textbook Question
Chapter 7, Problem 7LTB
The production of gametes. ___________.
- begins at puberty in males and females;
- requires that the testes of males produce semen;
- results in the production of diploid cells from haploid cells;
- begins at puberty in females;
- produces sperm and eggs that carry half the number of chromosomes as non gametes
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Sexual differentiation begins close to 4 weeks after fertilization, but cannot be seen visually until about 6 weeks post fertilization. All fetuses begin with a ______________________ gonad that is able to become either ovaries or testes, depending on the presence or absence of the Y chromosome.
If the Y chromosome is present, a region of the Y chromosome will begin expressing genes that start the process of masculinization of internal structures. This region is known as the ______________________________ region or ___________ for short. The expression of these genes causes the bipotential gonad to develop into the testes. Once the testes have started developing, two hormones, testosterone and Anti-MüllerianHormone are produced. Testosterone causes the _____________________ ducts to develop into the _____________________. Testosterone also causes the internal development of the __________________ and __________________. Anti-Müllerian Hormone causes the ______________________ ducts…
TRUE OR FALSE:
Primary spermatocytes are diploid in number like spermatogonia. Secondary spermatocytes are haploid in number.
In both males and females, primary sex organs called _________________ produce the gametes.
Chapter 7 Solutions
EBK BIOLOGY
Ch. 7 - List several ways in which meiosis differs from...Ch. 7 - Add labels to the figure that follows, which...Ch. 7 - Prob. 3LTBCh. 7 - A sperm cell follows which path? seminiferous...Ch. 7 - An egg cell that is not fertilized follows which...Ch. 7 - Which of the following is mismatched? urethra:...Ch. 7 - The production of gametes. ___________. begins at...Ch. 7 - If humans have 23 pairs of chromosomes, each...Ch. 7 - Prob. 9LTBCh. 7 - Prob. 10LTB
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- TRUE OR FALSE: Spermatogenesis is the final stage of reproductive cell division by which there is the development of haploid spermatids into sperm while spermiation is the event by which sperm are released from their connections to Sertoli cells.arrow_forwardfunction of ovary (simple and easy)arrow_forwardIn the absence of functional testes, both XX and XY genotypes will develop ____ internal sex structure. Kindly give an explanation too.arrow_forward
- Telomeres ___________. Group of answer choices are similar in function to free radicals None of these are true are transmitted through breast milk in infants can explain menopausearrow_forwardDuring the cleavage stage, this process takes the zygote from a single celled organism to multicellular morula. Question 8 options: Oogenesis Spermatogenesis Cytokinesis Mitosis Meiosisarrow_forwardThe tail of a sperm cell is a __________.arrow_forward
- A discussion of hormonal and physical changes required for gametes to be produced and released using the anatomic featuresarrow_forwardTrue or false sperm and ova or not identical to the parent cells that produce them?arrow_forwardsea star oral 4.The male gonads are called the _______________ and the female gonads are called the ____________________.arrow_forward
- The term __________ refers to the entire lower area of the abdomen. inguinal umbilicusarrow_forwardThe period of development during which the contents of a zygote is divided into smaller and smaller cells is ___________.arrow_forwardAnswer this question asap choice including follicular,luteal or botharrow_forward
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