A female horse can mate with a male donkey
but they will produce a mule that is sterile.
This is an example of what type of isolation
mechanism?
a. allopatric
b. ecological
c. behavioral
d. mechanical
e. temporal
D
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The functioning of enhancers is an example of _____
A) transcriptional control of gene expression B) a post-transcriptional mechanism to regulate mRNA C) the stimulation of translation by initiation factors D) post-translational control that activates certain proteins E) a eukaryotic equivalent of prokaryotic promoter functioning
Chemokines are a group of small proteins that
A) attract T cells to sites of injury. B) function as chemoattractants for phagocytes and lymphocytes. C) potentiate specific immune responses. D) attract T cells, phagocytes, and lymphocytes, as well as potentiate specific immune responses.
Individuals suffering from Crohn disease or irritable bowel syndrome may benefit from ____________________
Fill in the blank(s) with correct word
Which of the following consists of organisms, all of which share a common gene pool?
a. a community b. a population c. a biosphere d. an ecosystem e. a landscape