In humans, freckles is dominant over no freckles. A man with freckles marries a woman having freckles but the children have no freckles. What chances did each child have for freckles.
25%
50%
75%
100%
A
75%
B
100%
C
25%
D
50%
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Solution
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The correct option is C 75% Freckles are dominant over non freckles. If a man with freckles marries a woman with freckles. Freckles is a condition where an organism have brown spots in his body. Freckles is represented by F(dominant) and n on freckles is f(recessive). It will be dominant over 'f' in heterozygous condition as well.Both of the parents produces FF (homozygous dominant),Ff(heterozygous dominant),Ff (heterozygous dominant), and ff(homozygous recessive) in the first progeny.So out of 4 progeny only 75% of the total progeny have the chances to be with freckles.
So, the correct option is C'.
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