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2 votes
Tongue rolling is a dominant trait. Explain why it is possible for both parents being able to roll their tongue but their biological child is not able to do so.

2 Answers

2 votes

Answer:

The answer is 0 ( AKA A )

Step-by-step explanation:

Parents form the same type of gene, which is Rr. Since all the genes are the same, there can not be a chance that the offspring can not roll the tongue. Next time focus on your work!! :3

User Cherrie Wilson
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8.8k points
4 votes
The parents are heterozygous so when they have a kid they got the ressesive trait so they can’t roll there tongue
User Daniccan
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8.2k points

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