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Colorblindness is sex recessive A female who is heterozygous for -green color blindness normal male. What is the chance the boys wil be colorblind Do the Punnett Square!

Colorblindness Is Sex Recessive A Female Who Is Heterozygous For Green Color Blindness Normal Male What Is The Chance The Boys Wil Be Colorblind Do The Punnett class=

Sagot :

Histrionicusidn

Answer:

The correct answer is - 50% of boys will be colorblind.

Explanation:

Colorblindness is an X-linked recessive disorder which means it will affect a female if present in both X chromosomes whereas in males there is only one X chromosome so even one chromosome with the mutated gene will cause the disorder.

Cross: heterozygous female (XHXh) with a normal man (XHY)

gametes: XH Xh and XH Y

Punnett:

          XH       Y

XH    XHXH   XHY

Xh    XHXh    XhY

male color blind ratio: 1/2 = 50%

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