Which of the Following Statements Is True According to the Dominant-Recessive

Multiple Choice

Which of the following statements is true according to the dominant-recessive genes principle?

A) A recessive gene exerts its influence only if both genes of a pair are recessive.
B) Genotype of an individual changes according to the changes in the individual's phenotype.
C) In a gene pair,the dominant gene helps the recessive gene express its instructions.
D) A genotype is an individual's observable characteristics.