Acleft chin is a dominant trait. one parent is
heterozygous for cleft chin, and the other parent does not
have a cleft chin.

what is the probability that the offspring will have a cleft chin?

a. 1 out of 4
b. 2 out of 4
c. 3 out of 4
d. 4 out of 4

2 out of 4

Explanation:

Using the already provided letters we can fill in the blanks in each box by combining the two letters that correspond (capital letter always goes first)

Top left: Cc, the dominant trait shows.

Top right: cc, both recessive traits are showing and there is no cleft chin.

Bottom left: Cc, dominant trait shows.

Bottom right: cc, both recessive traits and no cleft chin.

There are two possibilities of the dominant trait, the cleft chin, showing, which makes 2 out of 4 possibilities.

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explanation:

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desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.