Defenitons

Question 1

Law of independent assortment

Answer 1

When forming gametes, the alleles from one chromosome will never influence the others and they are therefore independently assorted.

Question 2

Law of dominance

Answer 2

The only trait that can be expressed is the dominant allele if it is present.

Question 3

Law of segregation

Answer 3

When gametes are being formed, one gene copy is selected at random for each gamete.

Question 4

Polygenic traits

Answer 4

Several pairs of alleles that effect the expression of a single genotype

Question 5

Complementary traits

Answer 5

In some traits, new phenotypes may arise out of the combination of 2 or more pairs

Question 6

Pleiotropic traits

Answer 6

A single gene that produces two unrelated genotypes (eg. Siamese tigers gene for fur colour and the connections of the brain and eyes)

Question 7

Epistatic genes

Answer 7

A gene that can interfere with the expression of another gene

Question 8

Environmental factors

Answer 8

Expression of a gene that is affected by environmental factors (eg. Rabbits in the summer vs the winter)

Question 9

Linked genes

Answer 9

Two traits that are located on the same chromosome that dont assort independently