Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)
12th Edition
ISBN: 9780135755785
Author: Gerald Audesirk, Teresa Audesirk
Publisher: PEARSON+
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Textbook Question
Chapter 42, Problem 2FIB
In mammals, the male gonad is called the___________ It produces both sperm and the sex hormone __________Within the male gonad, spermatogenesis occurs within the hollow, coiled structures called___________.
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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…
Chapter 42 Solutions
Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)
Ch. 42.1 - Prob. 1TCCh. 42.1 - Prob. 2TCCh. 42.1 - Prob. 1CSCCh. 42.1 - Prob. 1CYLCh. 42.1 - Prob. 2CYLCh. 42.1 - Prob. 3CYLCh. 42.2 - Mammalian sperm dont live very long after...Ch. 42.2 - Prob. 1TCCh. 42.2 - Prob. 1HYEWCh. 42.2 - describe the human male and female reproductive...
Ch. 42.2 - explain how hormonal interactons control...Ch. 42.2 - describe spermatogenesis and oogenesis, the...Ch. 42.3 - In 2017, scientists used CRISPR Cas9 DNA editing...Ch. 42.3 - describe the principal methods of contraception,...Ch. 42.3 - Prob. 2CTCh. 42 - In humans, sperm are produced in the a....Ch. 42 - In humans, fertilization usually occurs in the a....Ch. 42 - Prob. 3MCCh. 42 - Prob. 4MCCh. 42 - Prob. 5MCCh. 42 - Reproduction by a single animal, without the need...Ch. 42 - In mammals, the male gonad is called...Ch. 42 - Prob. 3FIBCh. 42 - Prob. 4FIBCh. 42 - Prob. 5FIBCh. 42 - Oocytes develop in a multicellular structure, the...Ch. 42 - Describe the advantages and disadvantages of...Ch. 42 - Compare the structures of the egg and sperm. What...Ch. 42 - Prob. 3RQCh. 42 - List the structures, in order, through which a...Ch. 42 - Name the three accessory glands of the male...Ch. 42 - Prob. 6RQCh. 42 - Prob. 1AC
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- The tail of a sperm cell is a __________.arrow_forwardLevels of ____________________ are maintained at high levels throughout pregnancy to prevent menstruation. Oxytocin Prolactin Progesterone Both B and C Don't copy from Googlearrow_forwardFollowing ovulation, the follicular cells of the ovary enlarge to form a structure called ______________.arrow_forward
- Fill in the blank: The number of chromosomes normally present in a human sperm cell is _______________________.arrow_forwardFill in the blank: The meiosis of egg formation is called _______________________.arrow_forwardIn a female human, the oogonium forms when the female is a _____________.arrow_forward
- __________ is the process by which egg cells are formed.arrow_forwardIn a femal human, the oogonium forms when the female is a _______________. This happens _________________. At puberty some of the primary oocytes continue meiosis. Each menstrual cycle a few will continue development. They will only go to __________________. of meiosis and stop unless fertilization occurs.arrow_forwardThe female's _____________ glands secrete milk.arrow_forward
- Reduction of fertility in men usually occurs________________.arrow_forwardTesticular cancer is the most common form of cancer among men ages 15 to 34. The affected testis is removed in a procedure called an orchiectomy. However, fertility is rarely changed by this surgery. Discuss why.arrow_forwardDuring fertilization in flowering plants, one sperm cell nucleus fuses with the egg nucleus, producing the diploid zygote. The other sperm nucleus fuses with the ___________________________________, producing the triploid ________________________, which develops as temporary tissue that nourishes the embryo. This process is called ___________________ fertilization. What tissue nourishes the embryo in gymnosperm seeds?arrow_forward
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