Biology Help?

Question

6.Natural selection acts on populations of living things, usually through a specific trait. Which statement must be true about that trait?

A.The trait is passed on genetically to the next generation.

B.The trait is the same for all organisms.

C.All forms of the trait have the same impact on survival.

D.The trait is resistant to mutations.


8.A population of snails is experiencing disruptive selection in terms of their shell patterns. Which statement is most likely true about the population?

A.The frequency of the most common shell pattern is becoming higher than all other patterns.

B.The frequency of a new shell pattern is becoming higher than all other patterns.

C.Two different shell patterns are increasing in frequency, while the most common pattern is decreasing.

D.Two different patterns are combining into one very common pattern.

Answer 1

6. A. All organisms do not have the same traits. Each trait has a different impact on survival. No trait is resistant to mutations.

8. C. Disruptive selection favors two extremes. So A and B are out because they favor one pattern, not two. D is out because that would result in a dominant extreme.

Answer 2

Get a Tutor.

Answer 3

A + C