There are two population A (N = 500) and B (N=50). Due to genetic drift, both populations will lose its genetic diversity in a generation. Such losses become magnified over many generations. After 20 generations, what will be lose its original variation?

#Question id: 3441

#Section 2: Evolution

Animals tend to maximize their energy intake-to-expenditure ratio. What is this behavior called?

#Question id: 10737

#Section 1: Ecology

Which of the following statements is true?

#Question id: 11256

#Section 1: Ecology

Inferences built on the idea that evolutionarily older and younger characters should be found among close relatives if they are linked by evolution has been elaborated into a branch of evolutionary biology known as __________.

#Question id: 10655

#Section 2: Evolution

Which of the following statements about the evolution of life histories is correct?

A) Unstable environments with unlimited resources favor r-selected populations.

B) K-selected populations are most often found in environments where density-independent factors are important regulators of population size.

C) Most populations have both r- and K-selected characteristics that vary under different environmental conditions.

D) The reproductive efforts of r-selected populations are directed at producing just a few offspring with good competitive abilities.

#Question id: 3318

#Section 2: Evolution

When members of a metal- torerant and metal sensitive species that initially occupied the same habitat within the same range diverge into two species due to starting to show a change in their flowering season. This process known as