Allopolyploid

Definition

An allopolyploid is an organism that contains two or more sets of chromosomes derived from different species. This results from hybridization followed by chromosome doubling.

5 Must Know Facts For Your Next Test

1. Allopolyploidy is a significant mechanism in the formation of new plant species.
2. Hybridization between two different species leads to the initial formation of an allopolyploid.
3. Chromosome doubling occurs naturally or can be induced artificially to stabilize the hybrid genome.
4. Allopolyploids possess traits from both parent species, often leading to increased vigor and adaptability.
5. Many important agricultural crops, such as wheat and cotton, are examples of allopolyploids.

Review Questions

• How does an allopolyploid differ from an autopolyploid?
• What role does chromosome doubling play in the formation of an allopolyploid?
• Can you name two agricultural crops that are examples of allopolyploids?

Related terms

Hybridization:

The process of combining different varieties or species to create a hybrid.

Autopolyploid: An organism with multiple sets of chromosomes derived from a single species.

Speciation: The evolutionary process by which populations evolve to become distinct species.