Patti is passing on a mutated gene on her X chromosome. Why is her son more likely to express the mutation in his phenotype than her daughter is?
a) Males are more likely to inherit the bad copy of a gene whenever there is one.
b) Males do not have a second X chromosome that might have a good copy of the gene.
c) Estrogen will silence a mutated gene once her daughter experiences puberty.
d) Her daughter's Y chromosome will probably have a good copy of that gene to offset the bad one.
Answer: b
You might also like to view...
John B. Watson's theory emphasizes libidinal energy and erogenous zones
a. True b. False Indicate whether the statement is true or false
A friend asks you to describe a horror movie you recently saw. As you tell her about the movie, you remember the face of one of the characters as he confronts the monster. Which part of your brain is especially active as you experience the emotional dimension of your memory?
A. corpus callosum B. frontal lobe C. amygdala D. thalamus
Regina is a low-SES mother whose husband has taken on considerable child-care responsibilities after the birth of their son. Regina is likely to
A) report a higher level of distress due to her husband's actions. B) engage in high-quality mother–child interactions with her newborn. C) feel a dependent emotional connection to her spouse. D) slowly give up larger portions of child-rearing activities in favor of spending more hours at work.
A baby is considered a small-for-gestational-age infant if __________
a) the baby was born 38 weeks after conception b) the baby weighs less than 2,500 grams c) because of delayed fetal growth the baby weighs 90 percent (or less) of the average weight of other infants of the same gestational age d) the baby weighs less than 1,250 grams