Genetics: Inheritance

Question 1

Law of Segregation?

Answer 1

When gametes form, alleles are separated so that each gamete carries only one allele for each gene

Question 2

Define the Law of Independent Assortment

Answer 2

The segregation of alleles for one gene occurs independently to that of any other gene*

Question 3

What does the Principle of Dominance state?

Answer 3

Recessive alleles will be masked by dominant alleles†

Question 4

Modes of inheritance

Question 5

Explain complete dominance

Answer 5

The dominant allele will mask the recessive allele when in a heterozygous state
Homozygous dominant and heterozygous forms will be phenotypically indistinguishable
The recessive allele will only be expressed in the phenotype when in a homozygous state

Question 6

Explain co dominance

Answer 6

Co-dominance occurs when pairs of alleles areboth expressed equallyin the phenotype of a heterozygous individual