Use the following information. Many members of the Fugate family in Kentucky are

Question

Use the following information. Many members of the Fugate family in Kentucky are blue -- the color of their skin not the content of their mood. Blue skin is caused by a mutation in the CYB5R3 gene, with CYB5R3 degree representing the dominant allele and CYB5R3' representing the recessive allele. The Fugate family is of European origin, and parents of blue children usually have white skin color, (see: Trost, C. 1982. The Blue People of Troublesome Creek. Science 82: 35-39.) H the white skinned parents of a blue child have a second child, what are the chances that this second child will be blue? 1/8 1/4 1/3 2/3 3/4 7/8 1/1 (100% chance)

Explanation / Answer

8. What is the gamate distribution of white skinned father of a blue child ?

ans ; 50% CYB5R3D , 50% CYB5R3R .

half of the gamates from an individual heterozygous for a dominant mutation in a particular gene willhave the wild type of the allele ,sinc ethe fertilization of female gamates by males gamates occurs radomly ,Half of the F1 allele progeny willbe result in the wild type individual carrying the dominant allele will exhibhit dominant allele

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