Billy has 6 fingers on each hand, a trait called polydactyly, caused by a mutated allele that is dominant. Billy has a brother with 5 fingers on each hand and a brother with 6 fingers on each hand. His mother has 6 fingers on each hand, and his father has 5 fingers on each hand. What is Billy's phenotype

Explanation:

Billy's phenotype is his physical appearance. The phenotype is the physical expression of what the gene is made up of.

Billy is polydactyly i.e he has 6 fingers this is his physical expression also known as phenotype and his genotype will be heterozygous dominant(Tt) for the gene to have express itself in the phenotype of billy. He is heterozygous of the gene because his father is recessive of the gene polydactyly

hey bro i looked it up on google the structure of the eye-spot in euglena viridie, e. ehrenbergii, and phacus pyriyorme is not as franzé haa described it. the so-called “crystal body” and “lens bodies” were not found in any of the individuals of the species examined by me. as earlier observers have stated, the eye-spot consists simply of a mass of pigment granules arranged in a single layer, and probably embedded in a protoplasmic framework, but the latter could not be seen, and its presence was only inferred from the fact that the pigment granules must be held together in some way, thd the eye-spot as a whole is capable of expansion, and that the pigment granules can be separated from each other.

hope this   and an i get brainlsiest