Consider the data in the following table, derived from crossing a female fruit fly that was heterozygous for the sex-linked recessive loci, cut wings (ct), raspberry eyes (ra), and forked (f) bristles, with a wild-type male. Female progeny were all wild- type. Male progeny are listed below. Phenotype ct ra f + + + ra f ct + f ct + ra + ct ra + + + + f 8888 Number of males 0.194 0.245 70 76 74 356 345 3 72 Total 1,000 What is the coefficient of coincidence for this cross? 0.299 0.370 0.266 4

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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.