3.2 Beyond Mendelian Inheritance

Question 1

Sex Linked Inheritance

Answer 1

The inheritance of genes located on non-sex chromosomes

Question 2

Multiple Allelism

Answer 2

The occurrence of more than 2 alleles for a locus in a population, even though only one occurs on a chromosome

Question 3

Incomplete Dominance

Answer 3

Heterozygous genotype expresses an intermediate phenotype (blending)

Question 4

Codominance

Answer 4

Both genotypes are expressed, not as a dilution of one (incomplete), but as a combination of the two

Question 5

Polygenic Effects

Answer 5

A single trait is affected by many genes

Question 6

Pleiotropic Effects

Answer 6

A single allele affects many traits

Question 7

Epigenetic Effects

Answer 7

Environmental cues can cause certain genes to be turned on and off.

Question 8

Karyotype

Answer 8

A display of all the chromosomes for a cell for a species

Question 9

Hemizygous

Answer 9

Males only have the one allele (Y) and that allele is going to determine the phenotype