answersLogoWhite

0


Best Answer

A mutation in a pre-existing gene. If the mutation effects the phenotype derived from the gene, it is determined to be a different allele.

Mutations can be small (such as a single nucleotide polymorphism) or large (such as entire genome duplication).

User Avatar

Wiki User

12y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

9y ago

Mutations in parent cells.

This answer is:
User Avatar

User Avatar

Wiki User

11y ago

Mutations

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What is the original source of all the different alleles of a genes?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Continue Learning about Natural Sciences

What are different genes for same trait?

Alleles


What genes with different information at the same locus?

alleles


Genes that come together with different alleles are called?

heterozygous


What is the possibility of one of many different genes on a chromosomes?

multiple alleles


Two forms of the same genes are known as?

Different forms of the same gene are called alleles.The different forms of a gene are called alleles.