You are studying a locus in mice that is similar to the locus controlling the ABO blood types in humans. That is, A and B are dominant to O and are codominant to each other. None will have the O blood type. You are trying to test for a fit to Hardy-Weinberg proportions in the MN blood group in a sample. The D 508 allele at the CFTR locus is the most common cause of cystic fibrosis in the population of Europe.
Heterozygotes are unaffected.
In the European population, genotype frequencies are equal to the Hardy-Weinberg proportions. Answer a. Interference in recombination means that the frequency of double recombinants is less than expected under the assumption of independence of recombination. A repressor is a protein that binds with DNA and prevents transcription of the adjacent coding region. In parts a and c, all individuals in the F 1 are AaRr. There will be no red individuals in the F 2 . 6.