Tuesday, July 28, 2009

Genetics question-- please provide a explanation so i can understand why you got the answer?

Crosses between white-coated cattle (Cw Cw) and re coated cattle (Cr Cr0 produce roan offspring (Cr Cw). This type of inheritance pattern is know as








a)sex linkage


b) codominance


c)crossing over


d)multiple allele inheritance

Genetics question-- please provide a explanation so i can understand why you got the answer?
b


In codominance, neither phenotype is recessive. Instead, the heterozygous individual expresses both phenotypes.
Reply:w,w vs r,r produce w,r





Co-dominance - neither gene is completely expressed so the cow isnt red or white - its partway between - roan.
Reply:b) codominance





Both alleles are dominant leading to a mixture of the roan color

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