The result of X inactivation is ____________________ between the sexes. Fill in the blank(s) with the appropriate word(s)
ANS: dosage compensation
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The covalent bonds connecting monomer units in sugars can be formed by the removal of a water molecule. This reaction is referred to as:
A. a hydrolysis reaction. B. an oxidation-reduction reaction. C. a dehydration reaction. D. a hydration reaction.
Which is most likely to happen to a human polyploid?
a. natural abortion b. death around the age of 1 year c. survival until the early teens d. survival until the mid-thirties e. death around the age of 1 month
The structure labeled 3 in Figure 35-2 is:
a. the secondary xylem.
b. formed by the division of the vascular cambium.
c. found adjacent to the pith.
d. usually referred to as wood.
e. the cork cambium.
The disease that has been named "acquired immune deficiency syndrome" by the medical community is caused by _________________ virus.
A) Human T-cell lymphotropic B) Human immunocompetency C) Herpes simplex