One gene controls the synthesis of one

A gene is the set of specific nucleotide sequences, which is present on a chromosome at certain specific places. A gene is responsible for the determination of the traits of any individual. A gene helps in the expression of these traits by the formation of the polypeptides. A gene controls the synthesis of these polypeptides, which then expresses the concerned traits.

Hence, the answer is 'polypeptides'.

i think it is true in my reasonment ..

hi~~

i would say that hybridization occurs frequently in nature, because there are many types of hybrids that have occurred naturally, such as the mule (male donkey + female horse)