An Allele is best described as: A. A version of a gene
B. A recessive gene
C. A dominant phenotype
D. A test cross

Explanation:

An Allele is best described as:

A. A version of a gene

B. A recessive gene

C. A dominant phenotype

D. A test cross

the statement is true

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.