12. can you curl your tongue? tongue - curling in humans (t) is a dominant genetic trait. derek can curl his…

12. can you curl your tongue? tongue - curling in humans (t) is a dominant genetic trait. derek can curl his tongue but his wife, ashley, cannot. all nine of their children can curl their tongues. complete the punnett square based on the genotypes they most likely have. derek ashley phenotype probability (%) tongue - curling: cannot curl tongue:

12. can you curl your tongue? tongue - curling in humans (t) is a dominant genetic trait. derek can curl his tongue but his wife, ashley, cannot. all nine of their children can curl their tongues. complete the punnett square based on the genotypes they most likely have. derek ashley phenotype probability (%) tongue - curling: cannot curl tongue:

Answer

Explanation:

Step1: Determine the genotypes

Since tongue - curling (T) is dominant and Ashley cannot curl her tongue, Ashley's genotype is (tt). All of their children can curl their tongues. If Derek had a heterozygous genotype ((Tt)), there would be a 50% chance of having a non - tongue - curling child ((tt)). But since all children can curl their tongues, Derek's genotype is most likely (TT).

Step2: Create the Punnett square

Derek ((TT)) can only contribute (T) gametes. Ashley ((tt)) can only contribute (t) gametes.

(T) (T)
(t) (Tt) (Tt)
(t) (Tt) (Tt)

Step3: Calculate the phenotype probabilities

All offspring have the genotype (Tt). Since (T) (tongue - curling) is dominant, the probability of tongue - curling is (100%) and the probability of not being able to curl the tongue is (0%)

Answer:

Tongue - curling: (100%) Cannot Curl Tongue: (0%)