Answer :

A) Phenotype is an organism's genetic makeup behind the scenes.

Genotype is an organisms genetic makeup behind the scenes.

  • It describes an organism's complete set of genes.
  • The term can be used to refer to the alleles, or variant forms of a gene, that are carried by an organism.

What are genes?

  • A gene is the basic physical and functional unit of heredity.
  • Genes are made up of DNA.
  • Some genes act as instructions to make molecules called proteins.
  • Many genes do not code for proteins.
  • In humans, genes vary in size from a few hundred DNA bases to more than 2 million bases.

Hence, C option is correct.

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