The human genome has a size of approximately
a. 1 billion base pairs
b. 3 billion base pairs
c. 7 billion base pairs
d. 10 billion base pairs
e. 14 billion base pairs
B
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If reproduction occurs early in the life cycle, what occurs?
a. the population growth rate increases b. the population size declines c. the population size is not affected d. the generation time increases e. the growth rate remains unchanged
In which of the following zones would you most likely expect to find flounders (a type of fish)?
A) subtidal B) intertidal C) supratidal D) salt meadow
A vertebrate's circulatory system would not include:a
a muscular heart. b. blood vessels. c. lymph vessels. d. a hemocoel. e. blood.
The guard cells surrounding each stoma close the stomata periodically to
1. carry out cellular respiration 2. prevent water loss 3. conduct photosynthesis 4. absorb nutrients