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Masteriza [31]
3 years ago
12

Two smooth-faced parents with a dimple-cheeked baby show up one day in a small town. They integrate smoothly into the community,

but one day their pediatrician calls a police hotline and reports them for kidnapping. They are stunned that their crime was uncovered, until their attorney explains that the dimples gave them away: it is genetically unlikely for smooth-faced parents to have dimple-faced offspring. To demonstrate this, he fills out a Punnett square. What is the genotype or genotypes of the "parents"?

Biology
1 answer:
Margarita [4]3 years ago
5 0

Answer:

See the answer below

Explanation:

<em>Dimple cheek is usually considered to be an autosomal dominant trait, meaning that only one dominant allele is needed for the trait to physically manifest itself in individuals.</em>

Assuming that the allele for dimple cheek is represented by D. Since the two parents are dimple-cheeked, their genotype could be DD/DD or DD/Dd. In each case, the Punnet square analysis of their likely offspring is shown in the attached images.

                           DD   x   DD

offspring:     DD   DD   DD   DD (all dimple-cheeked)

                          DD   x   Dd

offspring:        DD   Dd   DD  Dd (all dimple cheeked)

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