Clasp Your Hands Together (Without Thinking About It)

Multiple Choice

Clasp your hands together (without thinking about it) .Which thumb is on top every time you do this? The dominant phenotype is left thumb on top.If you have the genotype tt,which thumb is on top?

A) left
B) right
C) left 50% of the time and right 50% of the time
D) left 25% of the time and right 75% of the time
E) left 75% of the time and right 25% of the time