Question

homework - complete dominance inheritance pattern
in this punnett square, the two parents are heterozygous for green hair (g).
what is the percent probability that they will produce offspring who also have green hair?
25%
50%
75%
100%

Explanation:

Step1: Determine the genotypes that result in green hair

In complete dominance, the dominant allele (G) determines the green - hair phenotype. Genotypes GG and Gg will have green hair.

Step2: Count the number of favorable genotypes

From the Punnett square: GG (1), Gg (2). So there are 3 favorable genotypes out of 4 total genotypes ($GG + Gg+Gg + gg=4$).

Step3: Calculate the probability

The probability formula is $P=\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}$. So $P = \frac{3}{4}=0.75$.

Step4: Convert to percentage

Multiply the decimal by 100: $0.75\times100 = 75\%$.

Answer:

75%