Cats can have tabby coloration (T) or can have white fur (W). There is also variation in hearing ability: some cats have normal hearing (N) or are deaf (D). Examine the following cross data between various cats with different traits. Genotypes are unknown; each parental cat is different.

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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.