What is the percent increase from 37.7 to 75.4

Assume that a population of 50 individuals has the following numbers of genotypes for a gene with two alleles, b and b: bb = 30, bb = 10, and bb = 10. calculate the frequencies of the two alleles in the population’s gene pool.

In what organelle does photosynthesis take place?

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?