Natural selection may result in 

A. retention of favorable genes.
B. mutations.
C. the introduction of new genes into a population.
D. All of these answers are true.


A. retention of favorable genes.

Biology & Microbiology

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When DNA replication proceeds along a template, which of the following best describes the directionality of synthesis?

A. in the 3'-to-5' direction B. in both the 3'-to-5' and the 5'-to-3' directions C. in the 5'-to-3' direction D. from the centromere to the telomeres E. from telomere to telomere

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Which of the following is a possible cause of herniation of discs?

A. hepatitis B. whiplash C. plantar fasciitis D. ulcer

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All infections result in disease

Indicate whether the statement is true or false

Biology & Microbiology