Autopolyploidy

Definition

Autopolyploidy is a condition in which an organism has more than two complete sets of chromosomes, all derived from a single species. This can result in new species formation through reproductive isolation.

5 Must Know Facts For Your Next Test

1. Autopolyploidy occurs due to errors in cell division, such as nondisjunction during meiosis.
2. It can lead to instant speciation because autopolyploids can become reproductively isolated from their parent population.
3. Common examples of autopolyploid organisms include certain plants like potatoes and some ferns.
4. Autopolyploidy can increase genetic diversity within a species by allowing for multiple sets of alleles.
5. Polyploidy, including autopolyploidy, is more common in plants than in animals due to differences in their reproductive systems.

Review Questions

Related terms

Polyploidy: The condition of having more than two complete sets of chromosomes.

Allopolyploidy: A type of polyploidy where the chromosome sets come from different species.

Reproductive Isolation: Mechanisms that prevent different species from interbreeding and producing fertile offspring.