Answer:
all of the above is correct.
When two parents are purebred it means that they are homozygous for the characteristic that's being tested (in this case the fur colour). When they are crossed, the offspring will obligatory be heterozygous, an allele of each type from its parents. So, the trait that comes up will be the dominant trait, while the recessive trait will be hidden.
Answer:Two genetically identical daughter cells with the same chromosome number as the parent cell.
Answer:
Interspecific competition
Explanation:
Hummingbirds and robins are different species, so it is interspecific competition