A genotypically wild-type fruit fly is crossed to a fly with homozygous recessive mutations in two different genes that result in a wingless and an eyeless phenotype. The F1 generation is 100% phenotypically wild type. Two of the phenotypically wild-type F1 flies are mated and the following offspring are observed in the F2 generation: Wild type: 367 Wingless (wg): 119 Eyeless (ey): 134 Eyeless, wingless (ey; wg): 52 Part 1 Assuming independent assortment, how many F2 offspring would be expected to be homozygous for the wingless mutation but have normal eyes? O 224 O 126 O 112 378 Part 2 How many degrees of freedom are there in the results of this cross? 0 O1 02 03 04

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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.