Describe how the previous assumption regarding the development of sexual identity and the treatment for ambiguous genitalia has changed in recent years
What will be an ideal response?
Most scientists believed that children are psychosexually neutral at birth and that nurture had more to do with sexual roles than nature. Males with a small or malformed penis were surgically altered into females because in reconstructive genital surgery it is easier to make a vagina than a penis. However, investigators have concluded that it is wrong to assume that sexual identity is neutral at birth and that it can be shaped by the environment. This conclusion was confirmed by studies of children born as males with ambiguous genitals and surgically reassigned as females. Currently, guidelines for surgical sex reassignment use karyotypes to establish chromosomal sex and the presence of ovaries or testes as major considerations. Surgical reassignment of infants is now rarely done.
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On the outer surface of the plasma membrane there are marker molecules that identify the cell type. Often these molecules are
A. ATP. B. amino acids. C. nucleotides. D. carbohydrate chains. E. inorganic ions.
What is a contributing factor to an estuary's high productivity? a. The large amount of primary producers
b. The small amount of predators. c. The biomass of detritivores. d. The trapping of nutrients in sediments.
An -OH group is a(n) ____ group.
A. carboxyl B. hydroxyl C. amino D. methyl E. carbonyl
Figure 41.10
Use the figure above to answer the following question.
A germ cell is indicated by the letter(s) ____.
A. A B. B C. C D. D E. B, C, and D