In chickens a flat single comb is a recessive trait while short thick rose comb is dominant. in a particular population of chickens 45 are homozygous for the dominant trait 30 are heterozygous dominant and 25 have the recessive trait. which expression is the correct way to calculate the frequency of the recessive allele? a-80/100 b-80/200 c-55/100 d-55/200 e-120/200

The correct answer would be B-80/200.

Allele frequency is defined as relative occurrence of the allele at a particular locus in a given population.

We have a sample population of 100 chickens where

Frequency of homozygous dominant trait (CC) =  45

Frequency of homozygous recessive trait (cc) = 25

Frequency of heterozygous dominant trait (Cc) = 30

Total alleles would be = 100 x 2 = 200

Total number of observed copies of C (dominant allele) = (45 x 2) + 30 = 120

Similarly, number of observed copies of c (recessive allele) = (25 x 2) + 30 = 80.

Hence, the frequency of allele C = 120/200 = 0.6

Frequency of allele c = 80/200 = 0.4

correct answer: understand the different control methods available

integrated pest management is an strategy that is based on the ecosystem and try to prevent the pest and the damage caused by them by applying combination of technique like habitat manipulation, biological control and use of resistant varieties.

the main aim of the integrated pest management is not to completely eliminate the pest but to strengthen the ecosystem so that conditions are favorable for plants and unfavorable for pests.