Earlobe attachment is controlled by a single gene.  The free (F) condition is dominant over the attached (f) condition.  A woman with free earlobes produced several children with a man having attached earlobes.  The following results were obtained with the F1 offspring:  8 free, 7 attached. What are the parents’ genotypes? a. A heterozygous free-lobed man is mated to a heterozygous free-lobed woman. What are the genotypes and phenotypes of their possible offspring?

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A: Genotype is the genetic makeup of an organism.  It consists of 2 alleles in an individual.

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A:

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Inheritance and Mendelian Genetics

Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain biological inheritance that follows the rules and principles laid down by Gregor Mendel in 1865. The initial hypothesis was considered wrong, but other inheritance theories modified the concept of inheritance and thus genetics.