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If a black man marries a white skin fema...

If a black man marries a white skin female, the mulattoes are born. If such mulattoes intermarry , are born . If such mulattoes intermarry , the progeny will show a gradual gradation of skin colour in the ratio of

A

`9: 3 :3 :1`

B

`1: 4 :6 : 4 : 1`

C

`1 :4 : 6 : 15 : 20 : 15 : 6 :4 :1`

D

`1 : 6 : 15 : 20 : 15 : 6 : 1`

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The correct Answer is:
D
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