Reduction division

Definition

Reduction division is the first division in meiosis where the chromosome number is halved from diploid to haploid. It ensures genetic diversity through the separation of homologous chromosomes.

5 Must Know Facts For Your Next Test

1. Reduction division occurs during meiosis I.
2. Homologous chromosomes are separated into different cells during reduction division.
3. It results in two haploid cells from one diploid cell.
4. Genetic recombination occurs through crossing over in prophase I of reduction division.
5. Reduction division is crucial for sexual reproduction, ensuring offspring have the correct number of chromosomes.

Review Questions

• What phase of meiosis does reduction division occur in?
• How does reduction division contribute to genetic diversity?
• What is the outcome in terms of chromosome number after reduction division?

Related terms

Meiosis: A type of cell division that reduces the chromosome number by half, resulting in four haploid cells.

Haploid: A cell with half the number of chromosomes as a diploid cell, containing only one set of chromosomes.

Crossing Over: The exchange of genetic material between homologous chromosomes during prophase I of meiosis, leading to genetic variation.