Question

Please explain this thoroughly for a like. Thanks!

- /1 In a population of 500 fruit flies, 50 are genotype RR, 300 are genotype Rr and 150 are genotype rr. The frequencies of the R and ralleles, respectively, in this population are: O 0.40 and 0.60 O 0.35 and 0.65 O 0.32 and 0.68 O 0.70 and 0.30

Answer 1

Total number of fruit flies = 500

RR= 50

Rr= 300

rr = 150

So  

The frequencies of R allele is - ( 2 × frequency of RR + frequency of Rr) / 2× Total number of individuals

= ( 2× 50+ 300)/ 2× 500

= 400/1000

= 0.40

Likewise frequency of r allele is = ( 2 × frequency of rr + frequency of Rr) / 2× Total number of individuals

= (2×150+300) /2×500

=0.60

So the answer is - 0.40 and 0.60