A. The organism has a large nose, because it's homozygous.
If the organism got from its mom a dominant allele, and from its dad a dominant allele also, the organism will be homozygous dominant. The dominant characteristic is a large nose, therefore the organism will have a large nose as he is homozygous dominant for that trait. If he was heterozygous, he would still have a large nose because it is the dominant trait. To have a small nose, the organism would have to receive from its parents, two recessive alleles.
