Is it possible for two people to have the same phenotype but different genotypes ?

Same phenotype but different genotype is possible due to presence of dominant allele

Explanation:

A person can have a dominant allele on both the homologous chromosomes  while another person may have single dominant allele and a corresponding recessive allele.

structure is maintained and sustained by:

-cytoskeleton: gives cells coherence

-cell wall: support

-cytoplasm: shape

hope this .

i believe the answer is a or 1