Question

Which example could be evidence for an organism's growth being influenced by the organism's genes?
A.
A hamster species can be made smaller by mating together only small hamsters.
B.
Vegetation grows at different rates depending on the available water supply.
C.
Orchids grown in a greenhouse are smaller than orchids grown in the wild.
D.
A cat that eats more food will grow to be larger than a cat that eat less food.

Answer 1

A. Mating only small hamsters and producing smaller offspring shows the trait is heritable — growth is influenced by the hamsters' genes.