Final answer:
The phenotype of individuals with the genotype MM is homozygous dominant.
Step-by-step explanation:
The phenotype of individuals with the genotype MM is homozygous dominant for the trait being studied.
In this case, the dominant allele is represented by M, and the recessive allele is represented by m.
Since the genotype is MM, the individual will express the dominant phenotype for the trait.
Learn more about Phenotypes and Genotypes