Concept explainers
To determine: The pathway of sexual differentiation (male or female) which is regarded as the default pathway.
Introduction: There are obvious
To determine: The reason due to which a particular pathway of sexual differentiation (male or female) is regarded as the default pathway.
Introduction: There are obvious phenotypic differences among males and females. The differences between the sexes in humans are emphasized with the help of secondary sex characteristics which include the body size, the patterns of fat distribution, muscle mass, and the development of male or female sex organs such as penis or vagina respectively.
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Chapter 7 Solutions
Human Heredity: Principles and Issues (MindTap Course List)
- Figure 43.15 Which of the following statements about hormone regulation of the female reproductive cycle is false? LH and FSH are produced in the pituitary, and estradiol and progesterone are produced in the ovaries. Estradiol and progesterone secreted from the corpus luteum cause the endometrium to thicken. Both progesterone and estradiol are produced by the follicles. Secretion of GnRH by the hypothalamus is inhibited by low levels of estradiol but stimulated by high levels of estradiol.arrow_forwardIf male reproductive pathways are not cyclical, how are they controlled?arrow_forwardExplain the Mechanisms of Sex Determination?arrow_forward
- Which of the following is true regarding the determinants of sexual development: the presence of the gene for HY antigen on the Y chromosome determines whether a testis develops from the gonadal ridge. the presence of MIS determines whether the Wolffian ducts develop. the presence of estrogen determines whether a vagina develops. the presence of DHT determines whether a prostate develops.arrow_forwardHow is sex determined in human beings?arrow_forwardHow is sex determined in humans? Which sex determines the sex of the offspring?arrow_forward
- Human Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage LearningHuman Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage LearningBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax