KIVO Med
Mitosis and meiosis
Two cell-division programmes: preservation of the diploid genome by mitosis, then reduction, recombination, and gamete production by meiosis.
- 55 explained questions
- 21 flashcards
- 93 estimated course minutes
Updated
What you will learn
- Distinguish the result, cells involved, and biological significance of mitosis and meiosis.
- Describe, in order, the stages of mitosis and of the two meiotic divisions.
- Explain the origins of intra- and interchromosomal variation and the chromosome states produced.
Course outline
Two cell-division programmes
Place mitosis and meiosis from the outset by their starting cells, sequence of divisions, and products.
8 min
Mitosis: conserved distribution
Follow somatic-cell division from DNA replication to two identical diploid cells.
15 min
Why mitosis is indispensable
Relate the fidelity of mitosis to genetic stability, growth, renewal, and tissue repair.
8 min
Meiosis: two divisions after one replication
Define meiosis, follow ploidy changes, and distinguish its two successive divisions.
14 min
Prophase I: pairing and intrachromosomal variation
Describe bivalents, chiasmata, crossing-over, and the five substages of prophase I.
20 min
Meiosis I: the reductional division
Follow alignment, segregation of homologues, and production of two haploid cells with double chromosomes.
14 min
Meiosis II and the biological meaning of meiosis
Complete sister-chromatid separation and relate the two types of variation to genetic diversity and conservation of chromosome number.
14 min
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