Length Group Number of Mice
Very small (4-5 cm) 2
Small (5-7 cm) 6
Average (7-10 cm) 15
Large (10-12 cm) 7
Very large (12-13 cm) 1
A bar graph entitled Mouse Body Size in a Population. The Y axis is labeled Length, centimeters. Two mice are very small, between four and five centimeters. Six mice are small in size, between five and seven centimeters. Fifteen mice are medium in size, between seven and ten centimeters. Seven mice have large bodies, between ten and twelve centimeters. One mouse is very large, between twelve and thirteen centimeters.
Identify the inheritance pattern that this trait follows in mice.
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Responses
Mendelian
Mendelian
polygenic
polygenic
complete dominance
complete dominance
incomplete dominance
incomplete dominance
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The inheritance pattern that this trait follows in mice is polygenic.
Polygenic inheritance refers to traits that are controlled by multiple genes, leading to a continuous range of variation (in this case, body size). The varying lengths of mice in the provided data show a spectrum rather than distinct categories, which is characteristic of polygenic traits.
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