In poultry, the genotype-phenotype relationships for comb shape are R/– P/–, walnut; R/– p/p, rose, r/r P/–, pea; and r/r p/p, single. What will be the comb characters of the offspring of the following crosses? a) A walnut crossed with a single produces offspring that are walnut, rose, pea, and single. b) A rose crossed with a walnut produces offspring that are walnut, rose, pea, and single. c) A rose crossed with a pea produces five walnut and six rose offspring. d) A walnut crossed with a walnut produces one rose, two walnut, and one single offspring

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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.