Answer:
A as they used they used if while the others are fact
"An organism in which the two copies of the gene are identical — that is, have the same allele — is called homozygous for that gene. An organism which has two different alleles of the gene is called heterozygous."
Answer:
A pedigree shows where human traits occur.
Explanation:
A pedigree is defines as a diagram that shows the occurrence and appearance of phenotypes of a particular gene or organism and its ancestors from one generation to the next.
Answer:
D.Radiant energy does not require a medium through which to travel.
Explanation:
