Question

13. Color blindness is a condition in which a person cannot distinguish specific colors from one another. For example, the person may not be able to distinguish red from green or blue from yellow. However, the person is able to distinguish some colors. Because color blind people are not blind and they can see some colors, many people prefer to use the term color-deficient. In humans, the condition for normal vision dominates color blindness. Both alleles are linked to the X chromosome. A color-blind male marries a color-blind female. If they have a daughter, what are the chances she will have normal vision? - X= normal chromosome Xc - X = X chromosome Containny color blind people. + 2. vlomon 50 1- The probability for the daughter to have normal vision is because Epunnet square shows both XcXc will be blind. 156 at the end of the term. This boon

Answer 1

Answer 13)

Yes, you have done the solution in correct manner.

what are the chances she will have normal vision? Хcy - X = normal chromosome - X = X chromosome Containny color blind people. Xe X. X c) X Y lb-viomonot the daughter Xo XcX 1- The probability for the daughter to have normal vision is because Epunnet square shows both XcXe will be blind.

The chances of daughter which is normal is 0. Because all daughters have diseased.

Answer 4)

Male has normal vision. The genotype of man is XCY.

Female is color blind. The Genotype of female is XcXc.

Parents: XCY × XcXc

Punnet square:

Gametes	Xc
XC	XCXc ( normal daughter)
Y	XcY ( color blind son)

The colorblind daughter is not possible in the mating between the color blind mother and normal father. Because father passes XC allele in gamete and mother passes Xc allele in gamete. The fusion of such gametes produce XCXc ( carrier) daughter. Such daughter don't have colorblindness. They are normal in phenotype.

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