Daniel McDonald and Nancy Peer determined that eyespot (a clear spot in the center of the eye) in flour beetles is caused by an X-linked gene (es) that is recessive to the allele for the absence of eyespot (es). They conducted a series of crosses to determine the distance between the gene for eyespot and a dominant X-linked gene for striped (St), which causes white stripes on females and acts as a recessive lethal (is lethal when homozygous in females or hemizygous in males). The cross shown in the diagram was carried out (D. J. McDonald and N. J. Peer, 1961, Journal of Heredity 52:261-264). Ot est St es St est 에는 하는 예능 예능 하 하 es es es es es St+ Y est St 1630 1665 935 1005 1661 1024

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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.