If an X-linked recessive gene is expressed in 4 percent of the men, what proportion of women would
express the recessive trait? What will be an ideal response?
4/100 ? 4/100 = 16/10,000, or 4 out of 2,500
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Stomata close when ____ guard cells and they become ____
a. active transport pumps H+ into; turgid b. active transport of H+ stops in; flaccid c. active transport pumps H+ out of; turgid d. active transport pumps H+ into; flaccid e. active transport of H+ stops in; turgid
In a salt-wedge estuary the relationship between salinity and depth is that salinity:
a. is even from top to bottom. b. increases with depth. c. changes abruptly with depth. d. varies horizontally. e. decreases with depth.
Prolactin
a. stimulates the mammary glands to produce milk. b. affects only animals with mammary glands. c. causes the development of breasts and other secondary sexual characteristics in the male. d. acts in concert with FSH to produce milk. e. has secondary effects on reducing the size of the uterus after birth
The __________ is a system of fluid-filled sacs and canals in the inner ear. Fill in the blank(s) with the appropriate word(s)