Question

analyze the table below and answer the question that follows.
if having dimples is dominant (d) and not having dimples is recessive (d), which of the following correctly describes the phenotypes in the table?
a. all of the offspring have dimples
b. two of the offspring have dimples and two do not have dimples
c. three of the offspring have dimples and one does not have dimples
d. all off the offspring will not have dimples

Explanation:

Step1: Determine phenotype from genotype

In genetics, for a trait with dominant (D) and recessive (d) alleles, the genotypes \(DD\), \(Dd\) show the dominant phenotype (dimples), and \(dd\) shows the recessive phenotype (no dimples).

Step2: Count genotypes in Punnett - square

In the given Punnett - square, the genotypes are \(DD\), \(Dd\), \(Dd\), \(dd\).

Step3: Count phenotypes

There are 3 genotypes (\(DD\), \(Dd\), \(Dd\)) that result in the dimple phenotype (dominant) and 1 genotype (\(dd\)) that results in no - dimple phenotype (recessive).

Answer:

C. three of the offspring have dimples and one does not have dimples