Here is another problem. If R(red) is dominant to white, then if you cross a het

Question

Here is another problem. If R(red) is dominant to white, then if you cross a heterozygous red plant, with another heterozygous red plant, what would the resulting genotype ratio be?

25% RR, 50% Rr, 25% rr

75% RR, 25% rr

50% RR, 50% rr

D)100% RR

Based on question 3 above, what is the phenotype ratio that results?

100% red

50% red, 50% white

75% red, 25 % white

25% red, 75% white

A)

25% RR, 50% Rr, 25% rr

B)

75% RR, 25% rr

C)

50% RR, 50% rr

D)100% RR

Based on question 3 above, what is the phenotype ratio that results?

A)

100% red

B)

50% red, 50% white

C)

75% red, 25 % white

D)

25% red, 75% white

Explanation / Answer

Cross between a heterozygous red plant (Rr), with another heterozygous red plant will have the offspring with the following genotypes.

Rr* Rr = RR, Rr, Rr, rr.

Means, 25% RR, 50% Rr and 25% rr.

Thus, the correct option is A. 25% RR, 50% Rr, 25% rr

Q 2). The resulting phenotype is 75% red and 25% white because red (R) is dominant allele.

Thus, the correct option is C. 75% red and 25% white.

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