Neurospora crassa

Definition

Neurospora crassa is a type of filamentous fungus often used as a model organism in molecular and cellular biology. It is known for its role in genetic and biochemical research.

5 Must Know Facts For Your Next Test

1. Neurospora crassa was pivotal in the one gene-one enzyme hypothesis proposed by George Beadle and Edward Tatum.
2. It reproduces both sexually and asexually, with distinct phases for each mode of reproduction.
3. The genome of Neurospora crassa was one of the first fungal genomes to be sequenced, offering extensive insights into gene function and regulation.
4. It exhibits circadian rhythms, making it a valuable organism for studying biological clocks.
5. Neurospora crassa can grow on minimal media because it can synthesize all necessary amino acids and vitamins.

Review Questions

• What significant scientific hypothesis did Neurospora crassa help to establish?
• Describe the reproductive modes of Neurospora crassa.
• Why is Neurospora crassa considered an excellent model organism for studying circadian rhythms?

Related terms

Filamentous Fungi: A group of fungi characterized by long thread-like structures called hyphae.

Genome Sequencing: The process of determining the complete DNA sequence of an organism's genome.

Circadian Rhythms: Biological processes that display an endogenous, entrainable oscillation of about 24 hours.