Same phenotype but different genotype is possible due to presence of dominant allele. A dominant allele , when present in genotype, always expresses itself: both in double dose and in single dose.
Answer:
D. a person runs a shoe on a rug, causing extra electrons to be transferred to the shoe
I believe the answer is c. through science, stem cells are un differentiated cells that can be used to heal diseases all through the human body, similar to a discovery channel episode with a rat, treated with stem cells to form a human ear on the main part of its body.