Multiple Alleles and Incomplete Dominance Crosses

Question 1

Multiple alleles

Answer 1

some genes have more than two alleles; an order of dominance is given to determine phenotypes from genotypes; e.g. in a particular flower, colour alleles are red, amber, yellow, and albino in order of decreasing dominance

Question 2

Incomplete dominance

Answer 2

some genes have two alleles—neither of which are dominant; in the heterozygote the phenotype is a mixture of both alleles; e.g. if the white and black alleles are incompletely dominant, the heterozygote will be grey

Question 3

Incomplete dominance

Answer 3

some genes have two alleles—neither of which are dominant; in the heterozygote, the phenotype is a mixture of both alleles; e.g. if the white and black alleles are incompletely dominant, the heterozygote will be grey

Question 4

Biodiversity

Answer 4

the variation present in the genes, species, and ecosystems of a biome; at the species level refers to the variety of alleles, genotypes, and phenotypes present for each gene used as an indicator of the biological health of a species, ecosystem, or biome

Question 5

Pedigrees

Answer 5

a chart outlining the generations and relationships within a family line