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In human beings, brown eyes are usually dominant over blue
eyes. Suppose a blue-eyed man marries a brown-eyed woman
whose father was blue-eyed. What proportion of their
children would you predict to have blue eyes?
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Answer / sujay
consider genes for brown eyed is BB-dominant and gene for
blue eyed is bb-recessive
If woman is homozygous that is BB & marries with blue eyed
man then proportion of blue eyed children are like this:
man(BLUE) x woman(BROWN)
bb BB
b b B B
Bb Bb Bb Bb no blue eyed children and 0% of
offsprings are blue eyed.
If woman is heterozygous Bb and marries with blue eyed man
then proportion of blue eyed children are like this:
man(BLUE) x woman(BROWN)
bb Bb
b b B b
Bb bb Bb bb
here two children are blue eyed that 50% of the offspring
will be having blue eyes and 50% of children are brown eyed.
| Is This Answer Correct ? | 61 Yes | 17 No |
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