Inheritance 3.7.1

Question 1

What is Chi squared and when is Chi squared used ?

Answer 1

It is the statistic to investigate the differences between frequencies.
Used to determine whether there is a significant difference between expected and observed frequencies

Question 2

What are dihybrid crosses?

Answer 2

When we have two genes considered at the same time in a punnet square

Question 3

What causes predicted gametes in a punnet square to change?

Answer 3

Crossing over as it results in new combinations of alleles in the gametes

Question 4

What is epistasis ?

Answer 4

The occurence of one gene interfering with the expression of another.

Question 5

What is the epistatic gene ?

Answer 5

The gene that masks the effect of another gene

Question 6

What is the hypostatic gene ?

Answer 6

The gene whose expression is masked.

Question 7

What is recessive epistasis ?

Answer 7

This is when the epistatic gene will mask the other gene expression but only when it is in homozygous recessive form.

Question 8

What is dominant epistasis ?

Answer 8

The presence of a dominant allele will mask the effect of the second gene, regardless of what the second gene is.