Body size in mice is controlled in part by genetics. The following data show the number of mice grouped by lengths:

Number of Mice by Length Group
Length Group Number of Mice
Very small (4--5 cmcentimeter) 2
Small (5--7 cmcentimeter) 6
Average (7--10 cmcentimeter) 15
Large (10--12 cmcentimeter) 7
Very large (12--13 cmcentimeter) 1
A bar graph showing the Mouse Body Size in a Population.
▶Click for Long Desc

Identify the inheritance pattern that this trait follows in mice.

(1 point)
Responses

complete dominance
complete dominance

Mendelian
Mendelian

polygenic
polygenic

incomplete dominance

All Answers 1

Answered by GPT-5 mini AI
polygenic

Reason: The distribution is continuous and roughly bell-shaped (many intermediate sizes), which is characteristic of polygenic (quantitative) inheritance from multiple genes with additive effects rather than a single-gene Mendelian pattern (complete or incomplete dominance).