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HomeHomework HelpbiologyMeiosis Process and Stages

Meiosis Process and Stages

Meiosis is a specialized type of cell division that reduces the chromosome number by half, resulting in four genetically diverse haploid cells from one diploid parent cell. It consists of two sequential stages: meiosis I, which separates homologous chromosomes, and meiosis II, which separates sister chromatids.

intermediate
2 hours
Biology
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Overview

Meiosis is a crucial biological process that enables sexual reproduction by producing gametes with half the chromosome number of the parent cell. It consists of two main stages, meiosis I and meiosis II, each with distinct phases that ensure genetic diversity through mechanisms like crossing over an...

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Key Terms

Chromosome
A structure made of DNA and proteins that contains genetic information.

Example: Humans have 46 chromosomes in each somatic cell.

Gamete
A reproductive cell (sperm or egg) that carries half the genetic information.

Example: Sperm and eggs are gametes in humans.

Crossing Over
The exchange of genetic material between homologous chromosomes during prophase I.

Example: Crossing over increases genetic diversity in offspring.

Independent Assortment
The random distribution of homologous chromosomes during meiosis.

Example: Independent assortment leads to varied combinations of traits.

Prophase
The first stage of cell division where chromosomes condense and become visible.

Example: During prophase I, homologous chromosomes pair up.

Metaphase
The stage where chromosomes align at the cell's equator.

Example: In metaphase I, pairs of homologous chromosomes line up.

Related Topics

Mitosis
Mitosis is the process of cell division that results in two identical daughter cells, important for growth and repair.
beginner
Genetics
Genetics is the study of heredity and the variation of inherited characteristics.
intermediate
Chromosomal Abnormalities
Chromosomal abnormalities can occur during meiosis, leading to conditions like Down syndrome.
advanced

Key Concepts

Chromosome ReductionGenetic VariationGamete FormationStages of Meiosis