..and if the child has the same phenotype as his father, what is his genotype?

Now, if the child received one allele from each of his parents, one t came from his non-tongue rolling father. What allele did he get from his tongue rolling mother?

What then, does that make his mother's genotype ?

Return to the question page and select the correct answer.

Now that you know the genotypes of the parents, perform a punnett square to determine the possible genotypes of the offspring. Below is a blank square. Remember to place the gametes of one parent across the top and the gametes of the other parent down the left side. It does not matter which parent's gametes are placed across the top and which are placed down the side.

Your punnett square should look similar to the one below. If it does not, review the material on gamete formation and how to set up the punnett square and try again.

Now count up how many of each genotype are possible and figure out what percentage can't roll their tongues. Will the chances of each successive child not being able to roll the tongue be the same?

Now return to the question page and select the correct answers.