Eye color in Drosophila is determined by a gene is on the X chromosome, with the red-eye allele dominant to white-eye allele. If a heterozygous red-eye female mates with a white-eye male, the phenotypic ratio of the offspring will be approximately: 50% red-eyeand 50% white-eyed O 75% red-eyed and 25% white-eyed O Females - 100% red-eyed, males - 100% white-eyed O Females - 100% white-eyed, males - 100% red-eyed

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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.