In humans, being a tongue roller (R) is dominant over non-roller (r). If both parents are heterozygous for tongue rolling. What is the probability of producing a heterozygous tongue roller child?

50%

Explanation:

This is because the Father will have Rr and the mother RR that being said if you do a chart you will find out it is 50%

R   RR   RR

r    Rr    Rr

hey there!

so, when you eat, your teeth chew and grind food into smaller pieces. this is mechanical digestion. then reactions aided by digestive enzymes break down large food molecules into smaller molecules. this is chemical digestion. the two processes change the food into simpler substances that can be used by the body for raw materials and energy.

hope this

tobey