Question

what would be the phenotype of a cross between a homozygous dominant tall plant and a homozygous recessive short plant? 100% tall 100% short 25% short, 75% tall 50% short, 50% tall

Explanation:

Let the allele for tall be T (dominant) and for short be t (recessive). A homozygous dominant tall plant has genotype TT and a homozygous recessive short plant has genotype tt. When they are crossed, all offspring will have the genotype Tt. Since the tall allele (T) is dominant, all offspring will show the tall phenotype.

Answer:

100% tall