A chance evolutionary change occurring in small populations is referred to as ________.

a. sexual
b. selection
c. gene flow
c. genetic drift


Answer: c. genetic drift

Biology & Microbiology

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Certain small towns in the western United States have remained isolated and inbred since their settlement many years ago. Some alleles are more common in these communities as compared to the rest of the population. This effect is known as  

A.  directional selection. B.  artificial selection. C.  founder effect. D.  Hardy-Weinberg principle. E.  disrupting selection.

Biology & Microbiology

The first genetically modified food product available for human consumption in the United States was ________

A) the Flavr Savr tomato B) Golden Rice C) ice-minus bacteria D) RoundUp Ready corn E) Bt corn

Biology & Microbiology

Explain why the figure below suggests that extinction probability is independent of a taxon's age. Keep in mind that the y-axis is measured on a logarithmic scale

What will be an ideal response?

Biology & Microbiology

Describe the components and functions of a homeostatic system and relate negative feedback. What will be an ideal response?

Biology & Microbiology