In snapdragons, flower color is controlled by incomplete dominance. the two difeles are red
(r) and white (w). the heterozygous genotype is expressed as pink.
a) what is the phenotype of a plant with the genotype rr?
b) what is the phenotype of a plant with the genotype ww?
c) what is the phenotype of a plant with the genotype rw?
4. a pink-flowerad nlantis

(a) Red coloured flowers

(b) White coloured flowers

(c) Pink coloured flowers

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

explanation:

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).