Allopatric speciation

What will be an ideal response?


a barrier physically separates a population into two groups that cannot interbreed.

Biology & Microbiology

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One application of auxins is its use in the production of:

A. fruit overgrowth B. fruit size increase C. fruit ripening D. fruit lacking seeds E. None of these is correct

Biology & Microbiology

Which is not a potential problem of allowing the genomic sequences of individuals to become widely available?

A) Discrimination by insurance companies. B) Misinterpretation of the information. C) Misuse of the information for social purposes. D) Advances leading to healthier lives for some people.

Biology & Microbiology

One use of PCR has been to monitor the trafficking of endangered organisms

Suppose that one suspect was accused of illegally importing a specific animal, but the suspect asserts that the young animal had been bred in this country from two resident zoo animals. How would you best proceed? A) Use blood cells to obtain DNA from the animals and look for sequences found only in illegally traded ones. B) Use DNA obtained from biopsy of the suspect organism and use a probe for infectious agents found more frequently in its native country. C) Use DNA obtained from the possibly imported animal and treat with restriction enzyme; use a probe for disease genes common in its native country. D) Use DNA from hair follicles of supposed zoo parents and of the supposed offspring to compare sequences amplified with primers for a highly polymorphic region. E) Amplify highly polymorphic regions from zoo and native populations to compare with the suspect organism.

Biology & Microbiology

In which case is it better for an organism to reach sexual maturity when it is older?

A. When predation is high B. When small individuals have higher mortality than larger ones C. When others in the population reproduce at younger ages D. When population density is low

Biology & Microbiology