Is genetic recombination a major source of variation among organisms?
Yes genetic recombination is the major source of variation among organisms.
look at dogs all dogs are the same species but different breeds. Look at the major differences between the different types of dogs.
Another sion is example of variation is Darwin's finches. There are 13 different "species" of finches all genetically related but with differences in variation and genetic expression.
If there were only four genes in an organism there would be
It is estimated that there are is a possibility of 30,000 genes in the human biome. That is
The loss of genetic information is also a cause of variation. This type of mutation is fairly common. Some breeds of dogs have lost certain genes that cause the differences in appearance.