Question

When calculating allele frequencies, what does the chi-square statistic tell us?

	a.	whether gene frequencies in a population differ from random expectations and change through time
	b.	relative fitness of different alleles in a population
	c.	difference in mean fitness between two populations
	d.	All answers are correct.

Answer 1

All answers options are correct.

Chisquare is the statistical test used to determine whether the observed frequencies are significantly differ from expected frequency.

That is we will assume the null hypothesis as there is no significant difference between expected and observed frequencies and alternate hypothesis as there is significant difference between them.

Bases on the result we will accept or reject null hypothesis.

So we can observe the relative fitness of different allele., and the difference between mean frequency between two population.