When a animal changes their body over long periods of time with mating with other species to develop different characteristics.
The given statement is True.
Sea corals are found deep inside the sea and oceans. They can survive in the shallow water. Deep sea corals can be found in groups or else can be found individually in water. They belong to phylum cnidaria and they live for thousands of years. They are found deep inside and if not disturbed in their habitat they can live long.
Bottleneck is an example of a genetic drift that happens when the size of a population is severely reduced.
Genes have different variants, called alleles. Each individual possesses two alleles for each gene (one inherited from its father, and one from the individual's mother). Alleles can have different relations with each other, and some alleles have a stronger expression, dominating the determination of the trait in the individual.
In the case of codominance, both of the alleles are equally influential, so both of them are expressed in the individual.
The most famous example of codominance is in the A,B,O blood type alleles.
The A and B alleles are codominant, so when both of them are present in the individual, that individual expresses both A and B proteins, resulting in AB blood type.