Fill in the blanks in the Punnet square below to answer the following question.

Question

Fill in the blanks in the Punnet square below to answer the following question. Use "Y" for y chromosome, "X" for normal X chromosome, and "xc" for colorblind X chromosome

Rosa is colorblind, but Joshua is not. They just found out from an ultrasound that their fetus is a boy. What is the percent chance that this child will be colorblind?

Percent chance that child will be colorblind: [??]

Rosa:
colorblind

Joshua:
not colorblind

Fill in the blanks in the Punnet square below to answer the following question. Use "Y" for y chromosome, "X" for normal X chromosome, and "xc" for colorblind X chromosome

Rosa is colorblind, but Joshua is not. They just found out from an ultrasound that their fetus is a boy. What is the percent chance that this child will be colorblind?

Percent chance that child will be colorblind: [??]

Rosa:
colorblind

Genotype:
[??]

Joshua:
not colorblind

gamete 1: [??] gamete 2: [??] Genotype:
[??] gamete 1: [??] cross 1: [??] cross 2: [??] gamete 2: Y cross 3: [??] cross 4: [??]

Explanation / Answer

Rosa is colorblind and genotype is XXxc

Joshua is normal and genotype is YYXC.

So, as the child is boy,

The first blank is YYXC.As it is boy, he might be normal.

The genotype crosses may be,

XYXC × XYxc

YYXC × XYxc

XYxc × XYxc

YYxc × XYxc

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