Respuesta :
So I did a punnet square and my results are XcXc, XXc, XcY, and XY. so yes there is possibility they could have a colorblind female (XcXc).
Ans.
Colorblindness is a sex-linked, recessive genetic disorder that results in inaccurate and limited color perception in affected people.
Females carry two X chromosomes and presence of one normal X chromosome can hide the effect of other mutated X chromosome (Xc) as it is a recessive trait.
So, females with both mutated X chromosomes (Xc) are diseased, while females with one normal and one mutated chromosome are unaffected and carrier for the disease.
Males carry only one X chromosome, so, all males with mutated X chromosomes (Xc) are diseased. Cross between a carrier woman and a colorblind man will give following progeny:
Parents: XcX (female) x XcY (male)
↓
Gametes: Xc & X Xc & Y
↓
Progeny: XcXc XXc XcY XY
Normal (carrier) female: 25% (XXc)
Colorblind female: 25% (XcXc)
Normal male: 25% (XY)
Colorblind male: 25% (XcY)
Thus, 'a carrier women and a colorblind man can have a colorblind female.'
