All else being equal, selection should more strongly favor reinforcement of reproductive isolation among related species:
A. in allopatric populations over sympatric
populations.
B. in sympatric populations over allopatric
populations.
C. in peripatric populations over sympatric
populations.
D. in peripatric populations over allopatric
populations.
E. in allopatric populations over peripatric
populations.
B
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A compound known as X-gal is widely used in molecular genetic research. When wild-type (normal) E. coli is grown on medium containing X-gal, the bacterial colonies turn blue. In contrast, when lacZ mutants are grown on medium containing X-gal
, the bacterial colonies remain their normal white color. X-gal is likely to be a compound _____. A) chemically similar to glucose B) chemically similar to galactose C) chemically similar to lactose D) that cannot be transported into lacZ mutants E) that can be transported only into lacA mutants
Wheat is a group of grass species that originated in the eastern Mediterranean and are now cultivated worldwide. In comparing wheat to other organisms, how would you evaluate the success of this species on the planet?
A. Examine the diversity of environments in which it is found. B. Examine the total biomass of wheat present on the planet. C. Examine the amount of variation of its genome. D. Examine its ability to grow outside of an agricultural setting. E. All of the answer choices are correct.
All organisms that are photosynthetic are oxygenic.
Answer the following statement true (T) or false (F)
E. coli O157:H7 and E. coli O111:H7 differ in their:
What will be an ideal response?