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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).
Answer:
Purebred can be described as organisms that result from true-breeding. True breeding occurs parents who have a homozygous genotype are crossed so that the offspring produced might be similar to them. The alleles of the desired genes will be the same in the parents which will breed and produce similar alleles in their offsprings.
However, the phenomenon of pure breeding limits the gene pool and genetic variety becomes limited by such methods.
Answer:
b is the correct answer ok bro
Gene mutations can be passed on to future generations and drive natural selection. ... Gene mutations can be helpful, harmful, or neutral for an organism's survival. Only mutations that are helpful in the organism's environment would influence its survival and reproduction