17.8: Epistasis

Question 1

Epistasis

Answer 1

the allele of one gene affects or masks the expression of another in the phenotype

Question 2

Chi-squared test

Answer 2

used to test the null hypothesis

Question 3

Null hypothesis

Answer 3

There’s no significant difference between the observed and expected results.

Question 4

Degrees of freedom

Answer 4

Number of classes/ categories - 1

Question 5

Critical value

Answer 5

Attribution to chance accepted by statisticians
eg: less than 0.05 (5%) = significant
significant = a factor other than chance is affecting the results = reject null hypothesis

Question 6

When to accept null hypothesis?

Answer 6

deviation is the equal to or more than the critical value = due to chance = not significant = accept null hypothesis