Organic Evolution. Chapter 6. Evolution - Defined. Evolution – a change in the genetic composition of a population over time. A change in the frequency of certain alleles. On a larger scale, evolution can be used to refer to the gradual appearance of all biological diversity.
(320 x 2) + 160 / 1000 = 800/1000 =.8 = 80%
Individuals homozygous for allele B
Individuals heterozygous for alleles B & b
Individuals homozygous for allele b
"Nothing in biology makes sense except in the light of evolution." Theodosius Dobzhansky, Geneticist