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Meiosis (artículo) | Herencia | Khan Academy
Cómo reduce la meiosis el número de cromosomas a la mitad: entrecruzamiento, meiosis I, meiosis II y variación genética.
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Reproduction and cell division | Khan Academy
New organisms don't just appear out of nowhere—they are the result of reproduction! In this unit, we'll learn about sexual and asexual reproduction, fertilization, and development. We'll also explore mitosis and meiosis, which are the cellular processes that allow organisms to …
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Gametes have half the chromosomes (haploid) of a typical body cell, while zygotes have the full set (diploid). Homologous chromosomes from each parent determine traits, including sex. Understanding haploid and diploid numbers is essential in studying cell division and genetics. Created by Sal Khan.
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Learn about mitosis and its significance in cellular division on Khan Academy.
Chromosomal crossover in meiosis I (video) | Khan Academy
Meiosis is a process where germ cells divide to produce gametes, such as sperm and egg cells. In prophase I of meiosis, chromosomes condense and homologous recombination takes place, leading to genetic variation through chromosomal crossover.
The cell cycle and mitosis review (article) | Khan Academy
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