Four of the five processes below are components of natural selection. Select the exception
a. genetic drift
b. overproduction of offspring
c. limitations in vital resources
d. genetic variation
e. differential reproductive success
A
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The strand of DNA for a particular gene that is copied by the RNA polymerase to form mRNA is called the ________ strand.
A. copy B. transcription C. template D. leading
Which pathogens require a host cell because they aren't able to make proteins on their own?
A) blue-green algae B) bacteria C) protozoans D) viruses
Where are the ribosomes that translate proteins to be secreted from the cell?
A) attached to the Golgi apparatus B) in the nucleolus C) attached to the rough endoplasmic reticulum D) in the cytosol
A human sperm cell possesses autosomes and
A) a Y chromosome always. B) exactly the same genetic information as a body cell. C) both an X and a Y chromosome. D) an X chromosome always. E) either an X or a Y chromosome.