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1) recessive allele is b
dominant allele is B
When an X chromosome contains the dominant allele,is written as:

</span><span>When an X chromosome contains the recessive allele, is written as:

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2) the genotype of the woman is
She is not color-blind but she is a carrier of red-green color blindness, who passed the allele to their sons.
Woman, have two X chromosomes. If she is not colorblind is because there is the dominant allele making her see normally. But, she is a carrier, so while one X chromosomes has the dominant allele, the other has the recessive (making her carry the disease).
Dendrites branch from the body and axons send the message
Their gametes would have half the number of chromsomes, so 24.