Two human beings who can both roll their tongues produced 11 children. 3 of these children could not roll their tongues and 8 children could roll their tongues.
(a) Which trait (rolling or not rolling) is controlled by the recessive allele?
(a) Only the ‘ not rolling ’ trait is controlled by the recessive allele.
This is because wherever the dominant allele is present, it will make the physical trait to be rolling .