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Which description is an example of a phenotype?

a. A certain duck has a blue beak.

b. A mutation occurred to a flower.

c. Most cheetahs live solitary lives.

d. both a and c

Which situation is most likely an example of convergent evolution?

a. Squid and humans have eyes similar in structure.

b. Worms and snakes both move without legs.

c. Some bats and birds have wings that allow them to fly.

d. all of the above

Which situation would most likely lead to allopatric speciation? a. Flood causes the formation of a new lake. b. A storm causes several large trees to fall down. c. A mutation causes a new trait to develop. d. An injury causes an organism to seek out a new food source.