What is the ultimate source of genetic variation and the basis for the diversity of life on earth?

Answer 1

Mutations. These have quite a few different causes.

Sexual reproduction is a "more recent source" {beginning 600 million years ago} of genetic variability. The process of sharing genetic information, coupled with the random crossing and mixing of genetic information during the creation of a new organism, leads to another source of genetic variability.

Answer 2

There are three primary sources of genetic variation:

1. Mutations are changes in the DNA. A single mutation can have a large effect, but in many cases, evolutionary change is based on the accumulation of many mutations.
2. Gene flow is any movement of genes from one population to another and is an important source of genetic variation.
3.Sex can introduce new gene combinations into a population. This genetic shuffling is another important source of genetic variation.

Answer 3

Mutations are the ultimate source of genetic variation, providing the raw material for evolution. They can occur spontaneously during DNA replication, resulting in different genetic sequences. This genetic diversity is the basis for the wide array of traits and characteristics seen in living organisms on Earth.

Answer 4

The ultimate source of genetic variability is mutation.

Answer 5

Genetic mutations in an animals genes.

Answer 6

mutation