Question

Some people can roll the tongue into a tube shape, while others cannot. Practicing is not likely to help because tongue-rolling is an inherited trait. The allele for rolling the tongue (R) is dominant to the allele for not being able to roll the tongue (r).

Create a Punnett square. Make sure that it shows a cross between two parents with at least one R allele.

Answer 1

I’m not sure if you want a specific Punnet Square with certain alleles, but this square exemplifies an example of a cross between parents with at least one R allele(which is what the question seems to ask).
Hope this helps :)

Answer 2

You need to add a Punnet square to give answerers more detail about your question.

Hope this helps.