Question

1. 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 phenotype probability (%) ashley tongue - curling: cannot curl tongue:

Explanation:

Step1: Determine 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 - curling child (\( tt \)). But since all children can curl, Derek's genotype is most likely \( TT \).

Step2: Create Punnett square

Derek (\( TT \)) and Ashley (\( tt \)):

Derek's gametes	Ashley's gametes (\( t \))
\( T \)	\( Tt \)

Step3: Calculate probabilities

All offspring have the genotype \( Tt \). The probability of tongue - curling (\( Tt \)) is \( 100\%\) and the probability of not being able to curl the tongue (\( tt \)) is \( 0\%\).

Answer:

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