Question

What does the difference between the observed and expected genotype frequencies tell you about the population?

Can someone tell me if my answer below is right?

Answer 1

Does this sound right?

the differences between observed and expected genotypes may differ because of chance or may indicate that the sample population is not in Hardy-Weinberg equilibrium. under the HW model it has 5 basic principles, and a population's genotype and allele frequencies will remain unchanged over multiple generations - thus not in HW equilibrium [not evolving]. If there are any differences it means that there is a violation of one of principles.

most populations would be under the influence of natural selection and populations will undergo changes in their genetic makeup due to migration/drift/gene flow etc. Mutattions can alter the gene pool too, but most have little effect. Lastly, individuals often mate selecteivly rather than randomly; sexual selection.

Answer 2

yes this sounds great good job! can you help me? go to the ? below you

Answer 3

anyone else?

Answer 4

I agree with what you've written. Another point you may want to mention (if you've learned about it) is that a particular genotype may be embryonically lethal, so you never see that genotype in the population for that reason.