Respuesta :
Genotype of Mother: XX°
Genotype of Father: XY
Explanation:
- Since the Red-green colour blindness is a recessive trait , it will not be visible in a heterozygous female because dominant allele will mask the recessive allele.
- Father has only one X chromosome, thus if the trait was present in that X chromosome he must have shown the trait because all the alleles in Y chromosome are recessive.
- Since the son has inherited the trait it is obvious that he had recieved the trait from his mother who must have been the carrier.
The genotype of the mother is XX while the genotype of the father is XY.
A genotype simply means the collection of genes in an individual. It is also referred to as the alleles that are inherited in a particular gene.
In this case, since red-green color blindness is a recessive trait, this implies that it will not be visible in a heterozygous female. Hence, the dominant allele will therefore mask the recessive allele.
Since the father has only one X chromosome, then if the trait was present in that X chromosome, he must have shown the trait because all the alleles in Y chromosome are recessive. In this case, the son has inherited the trait from the mother.
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