Tetrads

Definition

Tetrads are structures formed during meiosis I when each chromosome pairs with its homologous partner. This pairing allows for the exchange of genetic material through a process called crossing over.

5 Must Know Facts For Your Next Test

1. Tetrads form during prophase I of meiosis.
2. Each tetrad consists of four chromatids.
3. The formation of tetrads allows for genetic recombination.
4. Synapsis is the process that brings homologous chromosomes together to form tetrads.
5. Chiasmata are the points where crossing over occurs within tetrads.

Review Questions

Related terms

Synapsis: The pairing of homologous chromosomes during prophase I of meiosis.

Chiasmata: Sites where crossing over and exchange of genetic material occur between chromatids in a tetrad.

Homologous Chromosomes: Chromosome pairs, one from each parent, that are similar in shape, size, and genetic content.