Question

Mr. and Mrs. John have six children. Three of them have attached carlobes (recessive) like their father, and the other three have free earlobes like their mother. What are the genotypes of Mr. and Mrs. Jones and of their numerous offspring?

Answer 1

Mr. Johnson has an ee genotype

Mrs. Johnson has an Ee genotype

3 of the kids have an ee genotype, while the other three have an Ee genotype

Step-by-step explanation:

Since no letter was given for the specified traits, I picked the letter E to explain the genotypes above.

Since the dad is said to have the recessive version, we can conclude that his genotype is ee.

As for the mother, since 3 of the 6 kids are said to have the recessive ear trait like their father, she must be a carrier of the recessive gene (e); therefore, her genotype is Ee.

When making a punnet square, the possible genotypes of their children are Ee or ee.

The children with the free earlobes, like their mother, have a genotype of Ee, while the other three children with attached earlobes have a genotype of ee, like their father.