Respuesta :
If the woman has both alleles, one for a straight hairline and one for a widow’s peak hairline, then the egg has a chance of having both alleles.
What are alleles?
An allele is a single base or segment of the DNA. An allele is the variant of a gene. Different alleles contain different characters of the same organism.
Here, both alleles, one for a straight hairline and one for a widow’s peak hairline, are present in the woman. So the egg will have a chance of having both alleles, one can be dominant, and the other can be recessive.
Thus, the egg has a probability of carrying both alleles if the mother carries both of the genes—one for a straight hairline and one for a widow's peak hairline.
Learn more about alleles, here:
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