Host specificity of Rhagoletis pomonella reduces gene flow between the apple and hawthorn races by 4% to 6% in each generation. This is an example of:
a. allopatric speciation. c. secondary contact.
b. assortative mating. d. resource competition.
B
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After eating a carbohydrate-rich meal, the mammalian pancreas increases its secretion of _____
A) ecdysteroid B) glucagon C) thyroxine D) oxytocin E) insulin
Bipolar cells carry signals from rods and cones to:
A. ganglion cells B. the retina C. the visual cortex of the brain D. horizontal cells
The more common types of cancers evade immune system destruction by becoming less detectable and by actively overcoming the immune system: (a) give an example of each, and (b) propose an experiment that could distinguish between these possibilities
What will be an ideal response?
In flowering plants, a ripened ovary is known as a ________
Fill in the blank(s) with correct word