A colour-blind father has a daughter …
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Posted by Kriti Goswami 5 years, 3 months ago
- 2 answers
Yogita Ingle 5 years, 3 months ago
Colourblindness is an X-linked recessive trait caused due to the defective allele on the X chromosome.
In this problem,
Since the father is colourblind, his genotype would be XcY.
Although the woman has colourblind father, her vision is normal. This implies that she is a carrier of the trait. Therefore, her genotype would be.
This carrier woman marries a man with a normal vision.
|
|
X |
Y |
|
Xc |
XcX Daughter: Carrier |
XcY Son: Colourblind |
|
X |
XX Daughter: Normal |
XY Son: Normal |
From the above Punnett square, we can deduce that 50% of the daughter are carriers while 50% are normal. 50% of the sons are colourblind while 50% are normal.
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Riya Rana 5 years, 3 months ago
1Thank You