Question

homework - complete dominance inheritance pattern
the punnett square shows the result of a cross between a pea plant with genotype ii for inflated pods and a pea plant with genotype ii for constricted pods
what percentage of the offspring has inflated pods?
25%
50%
75%
100%

Explanation:

Step1: Determine the dominant and recessive traits

In complete dominance, the dominant allele (I) masks the recessive allele (i). Inflated pods are dominant (I), constricted pods are recessive (i).

Step2: Count the number of offspring with inflated pods

From the Punnett square, the genotypes are Ii, Ii, ii, ii. Offspring with Ii (heterozygous) will show the dominant trait (inflated pods). There are 2 out of 4 offspring with Ii.

Step3: Calculate the percentage

The formula for percentage is $\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}\times100\%$. So, $\frac{2}{4}\times100\% = 50\%$.

Answer:

50%