Question

you make a punnett square for a cross and find the results shown below. your prediction is that of the offspring would have the dominant phenotype, and of the offspring would have the recessive phenotype. 25% 50% 75% 100% done done

Explanation:

Step1: Count total outcomes

There are 4 squares in the Punnett - square, so total number of possible offspring is 4.

Step2: Count dominant phenotypes

The homozygous dominant and two heterozygous genotypes show the dominant phenotype. There are 3 such genotypes out of 4.

Step3: Calculate percentage of dominant phenotypes

The percentage of dominant phenotypes is $\frac{3}{4}\times100\% = 75\%$.

Step4: Calculate percentage of recessive phenotypes

The homozygous recessive shows the recessive phenotype. There is 1 such genotype out of 4. So the percentage of recessive phenotypes is $\frac{1}{4}\times100\%=25\%$.

Answer:

75% of the offspring would have the dominant phenotype, and 25% of the offspring would have the recessive phenotype.