Answer:
A homozygous dominant genotype is one in which both alleles are dominant.
Explanation:
For example, in pea plants, height is governed by a single gene with two alleles, in which the tall allele (T) is dominant and the short allele (t) is recessive.
Survival of the fittest. If one organism thrives better in an enviornment and the other organism struggles, the one that is more adapted will obviously play a part in helping the less adapted organism die out. Food is a major point along with other aspects
Carbon dioxide and water are released as by-products. (A)