When true breeding red tulips are crossed with true breeding white tulips, the progeny have pink flowers. This is an

example of:
a. incomplete dominance.
b. codominance.
c. pleiotropy.
d. epistasis.
e. norm of reaction


a

Biology & Microbiology

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Activator proteins in prokaryotes experience shape changes in the presence or absence of small molecules. As a consequence: (Select all correct choices)

A. they may activate genes needed only when such a small molecule is present in the cell. B. they may activate genes necessary to synthesize a specific small molecule. C. they are unable to act alone.

Biology & Microbiology

The result of migration is to _____ genetic differences among populations

A. reduce B. increase

Biology & Microbiology

Birds that are known to eat the chicks of other birds and even their own chicks are:

a. avocets. b. terns. c. curlews. d. gulls. e. penguins.

Biology & Microbiology

A diet high in red meat and saturated fat increases the risk for ________ cancers

A) colon, rectum, and prostate gland B) breast and liver C) brain and lung D) lung, stomach, and liver E) colon, breast, and liver

Biology & Microbiology