When mendels crosses a true breeding short plant with a true breeding tall plant, all the offspring were tall. Which term describes the gene for tallness

dominant

The term that described genes for tallness is dominant.

Explanation:

A dominant trait can be described as a trait which masks the effect of a recessive trait. A recessive trait can be described as a trait that gets suppressed by a dominant trait. For a dominant trait to occur an organism might have both the dominant alleles or it might be heterozygous i. e having one dominant and one recessive allele. For a recessive trait to occur both the alleles have to be recessive.