Population frequency questions

Biology
Tutor: None Selected Time limit: 1 Day

Jul 20th, 2015

Thank you for the opportunity to help you with your question!

38 are dominant, 42 are recessive.

Out of a population of 80, that's approximately 1/2 d and 1/2 r.

To be recessive, the genotype must be rr. We know one of the dominant alleles is d, but is the other one d or r?

If it were dd x rr, there wouldn't be any recessive at all. So it must be dr x rr. One half are phenotypically dominant and one half are phenotypically recessive; one half are heterozygous dominant, one half homozygous recessive.

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jul 20th, 2015

In the lab simulation it is asking for the recessive genotype frequency...can you help me figure that out?

Jul 20th, 2015

The recessive genotype refers to the incidence of homozygous recessive individuals-- in this case, 58.1% of the population :)

Jul 20th, 2015

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