These are the possible genotypes RR, Rr, Rr, rr
First 3 carries dominant gene for tongue rolling, so they can do it,
while the 4th genotype rr is homologous for recessive, and he/she can't
perform tongue rolling.
Answer:it will decrease
Explanation:
Because the increase temperature will favor the wasteful process
He based his hypothesis on a statement made by a dairymaid.
