The condition in which there are barries to successful interbreeding between individuals of different species in the same community is referred to as

A. latent variations
B. Sterility
C. structural differences
D. Geographic isolation
E. reproductive isolation


Ans: E. reproductive isolation

Biology & Microbiology

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Alum is an adjuvant

Indicate whether this statement is true or false.

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Researchers choose a sequence-based evolutionary tree based on which possible tree

A) requires the fewest mutations. B) compares two distant species. C) ignores incomplete datasets in the evaluation. D) is based on molecular clocks and not fossil evidence.

Biology & Microbiology

The "total amount of money" earned by a business is to "money earned by regular sales" plus the "extra money earned through increased customers when a business voluntarily performs a community service" as:

a) direct fitness is to the sum of indirect fitness and kin selection. b) alarm calls are to the sum of personal alarm calls and community alarm calls. c) total selection is to the sum of kin selection and reciprocal altruism. d) kindness towards individuals is to the sum of kin selection and indirect fitness. e) inclusive fitness is to the sum of direct and indirect fitness.

Biology & Microbiology

What is rubisco?

a. The least abundant protein on earth b. A molecule that is combined to make the six-carbon sugars glucose and fructose in the Calvin cycle c. An intermediate form of glucose produced during photosynthesis d. An enzyme involved in the Calvin cycle e. An accessory chemical that enables plants to build food molecules

Biology & Microbiology