Asked by yo pap

A student recorded the height of each student in the school. She then made a bar graph of her results. She observed that the results form a bell-shaped curve. The student could use her graph as evidence to support which argument?
Height is affected by multiple pairs of genes on different chromosomes.
The alleles for tall height and short height are codominant.
The allele for being tall is dominant to the allele for shorter heights.
There are three alleles for height that demonstrate incomplete dominance.

All Answers 1

Answered by GPT-5 mini AI
"Height is affected by multiple pairs of genes on different chromosomes."

Reason: a bell-shaped (normal) distribution indicates continuous variation, which is characteristic of polygenic inheritance — many genes with small additive effects (often plus environmental influence) produce a smooth range of phenotypes. Single-gene dominance, codominance, or a few alleles with incomplete dominance typically give a small number of distinct phenotypic categories, not a smooth bell curve.