Question

A population of wild-flowers was scored for flower color. There were 369 blue (BB) plants, 1915 violet (BR) plants and 748 red (RR) plants. Please round your answer correctly to 4 decimal digits. What is the frequency of the blue (B) allele?

Answer 1

frequency of B allele = 0.4375

Step-by-step explanation:

The population is constituted by plants with the following flower colors:

• 369 BB (blue)
• 1915 BR (violet)
• 748 RR (red)

Total: 3032 individuals

The frequency of an allele is a measure of how common an allele is in a particular population. It's simply the amount of times the B allele appears divided by the total number of alleles in the population.

The frequency of the B allele can be calculated using the following formula:

`freq(B)= (2 * BB \ individuals \ + BR\ individuals)/(Total\ number\ of\ alleles)`

• The B allele is present twice in the blue plants and once in the violet plants.
• Each individual has 2 alleles, so the total number of alleles is the total population number × 2.

`freq(B)= (2 * 369 \ + 1915)/(2\ *\ 3032)`

`freq(B)= 0.4375`