The widows peak gene is dominant over the straight hairline gene. Why is a widows peak considered a single-gene trait. Single Gene Traits In Humans Single Gene Traits In Humans Procedure For Each Of The Traits Listed Below 1 Indicate Your Expression Of The Gene By Course Hero A particular gene pool contains only two allelesG and H for an inherited trait. . The gene that is not expressed weaker is said to be the recessive gene. If the 2 widows alleles are present the individual will have a peak. Widows peak is thought to be a good example for demonstrating simple dominance with respect to genetic inheritance. It is controlled by a single gene and 2 alleles. Since it is a single-gene trait a child will display the dominant phenotype as long as one parent has the dominant gene. It is possible that if you have a widows peak someone in your family has one as well. That the altered mutation may still code for th...
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