In females with incontinentia pigmenti, the mosaic

effect of X inactivation in human females can be
observed in
a. skin color.
b. hair color.
c. distribution of fat cells.
d. distribution of sweat glands.
e. all of these.


Answer: a

Biology & Microbiology

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A plant’s response to the relative lengths of light and dark periods in its environment during each 24-hour period is a

phenomenon called ____.

a. gravitropism b. photoperiodism c. thigmotropism d. circadian rhythms e. phototropism

Biology & Microbiology

Reverse genetics is a process by which the functions of particular genes are worked out by disabling them. What process is used to knock out a gene or alter its expression?

a. molecular cloning b. genetic mapping c. gene targeting d. linkage analysis

Biology & Microbiology

Muscles can carry out their unique motor function because they are the only cells that contain actin and myosin.

Answer the following statement true (T) or false (F)

Biology & Microbiology

The ability to stand upright and walk on two legs is termed ________

Fill in the blank(s) with correct word

Biology & Microbiology