According to the endosymbiotic theory how did mitochondria evolve?

Bio molecules are essential to all living things. which biomolecule is “d” from the table

Abotanist scrapes pollen off a flower

Suppose a dominant allele codes for a big nose and a recessive allele codes for a small nose imagine that an organism receives a dominant allele from its mom and a dominant allele from its dad. what can be determined about its genotype and phenotype?