codominance and multiple alleles

Question 1

what is codominance

Answer 1

where both alleles present in the genotype of a heterozygote contribute to the individuals phenotype

Question 2

give an example of codominance in a snapdragon flower

Answer 2

cross breeding of homozygous red flower (C^R C^R) and homozygous white flower (C^W C^W)
= heterozygous pink flower = C^R C^W

Question 3

what are multiple alleles

Answer 3

when a gene has more than two alleles e.g human ABO blood group has 3

Question 4

what happens when there are more than 3 alleles e.g four alleles in bunny coat fur colour

Answer 4

alleles are in a hierarchy so there is an order to the dominance
-each allele is dominant to those below and recessive to those above in the hierarchy