Chapter 46 Study Guide

Question 1

Which of the following processes results in the offspring of sexual reproduction being genetically different from their parents?
A) fertilization
B) protein synthesis
C) cytokinesis
D) mitosis

Answer 1

fertilization

Question 2

Animals that use external fertilization are most likely to reproduce in which of the following areas?
A) sand dune
B) polar ice sheet
C) shallow lake
D) tallgrass prairie

Answer 2

shallow lake

Question 3

Which of the following describes an advantage of internal fertilization over external fertilization?
A) parents invest less time and energy in reproduction
B) the offspring are more likely to survive
C) populations increase faster
D) offspring are more genetically diverse

Answer 3

the offspring are more likely to survive

Question 4

Which of the following structures in females is analogous in function to the vas deferens in males?
A) urethra
B) oviduct
C) uterus
D) vagina

Answer 4

oviduct

Question 5

An inactivating mutation in the progesterone receptor gene would likely result in ________.
A) the absence of secondary sex characteristics
B) the inability of the uterus to support pregnancy
C) enlarged and hyperactive uterine endometrium
D) the absence of mammary gland development

Answer 5

the inability of the uterus to support pregnancy

Question 6

Which would most likely happen if the temperature of the human scrotum was increased by 2°C for several weeks? The male would experience ________.
A) reduced fertility due to impaired production of gonadal steroid hormones
B) reduced fertility due to impaired spermatogenesis
C) an increase in the rate of spermatogenesis due to faster chemical reactions
D) an increase in semen volume due to faster chemical reactions

Answer 6

reduced fertility due to impaired spermatogenesis

Question 7

Which of the following changes is most likely to occur as an immediate result of an injection of LH into a male mammal?
A) a decrease in production of inhibin
B) an increase in production of GnRH
C) a decrease in production of testosterone
D) an increase in production of testosterone

Answer 7

an increase in production of testosterone

Question 8

Which statement correctly describes the primary function of the corpus luteum?
A) to nourish and protect the egg cell
B) to maintain progesterone and estradiol synthesis after ovulation has occurred
C) to stimulate the development of the mammary glands
D) to support pregnancy in the second and third trimesters

Answer 8

to maintain progesterone and estradiol synthesis after ovulation has occurred

Question 9

For which of the following is the number the same in human males and females?
A) interruptions in meiotic divisions
B) functional gametes produced by meiosis
C) meiotic divisions required to produce each gamete
D) different cell types produced by meiosis

Answer 9

meiotic divisions required to produce each gamete