It's important to distinguish codominance(the expression of both alleles) from incomplete dominance (the expression of one intermediate trait) 19. Which of the letters below represent codominant traits and which are incomplete? (Incomplete = intermediate heterozygous phenotype) (Codominant= two phenotypes present when there are two dominant genes) Codominant Incomplete Dominant a) Dogs can be black, white, or white with black specks. b) Humans can have large, medium, or small lip protrusion. c) White and black sheep mate and have a grey sheep. d) Blue bird and red birds can produce offspring with blue feathers and red feathers. e) A brown rat and a white rat mate and can produce rat with a tan color coat.

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A:

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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.