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What is Meiosis and the difference between mitosis and meiosis $7.19
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What is Meiosis and the difference between mitosis and meiosis

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  • Grado
  • BSC 2010 (BIOLOGY)
  • Institución
  • Florida State College At Jacksonville
  • Book
  • Biology 2e

A quick way to learn everything about chapter 11 of biology 1 which covers miosis separation levels and the difference between mitosis and meiosis.

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  • 8 de noviembre de 2022
  • 14
  • 2022/2023
  • Notas de lectura
  • Crmn
  • Todas las clases

Temas

  • mitosis
  • miosis
  • cell separation

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  • Florida State College At Jacksonville
  • BSC 2010 (BIOLOGY)
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Ch 11


Asexual Reproduction
Single parent / No energy is expended trying to attract a mate a defend
mate from others.
Offspring have identical hereditary traits (genetic clones). / Mitosis
Basis for eukaryotic asexual reproduction.
Advantageous in constant environments, if all the clones are adapted to
the current environment.
One given about the environment; it will change in the future.
What is hard to predict, how will the environment change.




Sexual reproduction
• Sexual reproduction creates genetic diversity in a population
* This is important because the environment is constantly
changing, and organisms require genetic diversity to create
variability in case the environment changes
• The offspring of sexually reproducing parents are expected to vary at
the genetic level


(? ) Will all of these variations be successful in the current environment?
• Some will be well adapted, survive and successfully reproduce
Others might survive but have trouble reproducing
Some may not survive at all (and thus will not reproduce)

, Sexual reproduction
Gametes fuse to form a zygote
Zygote has recombined genes of two parents (one cell)
/Produces genetic variability
Meiosis: is basis of this genetic variability


Sexual reproduction
 Sexual reproduction requires the use of gametes (sex cells)
Gametes fuse to create a zygote
In order for the offspring and the parents to have the same number of
chromosomes per cell
*Gametes must have half of the total amount of chromosomes as a
autosomal cell (autosomal cells are not gametes)

 Most eukaryotes are diploid
Gametes must therefore be haploid
To create haploid daughter cells from a diploid mother cell, the cell divides
by meiosis
If gametes were created by mitosis, they would be diploid, and the offspring
would be tetraploid (4n) – that does not happen
Two haploid sex cells (gametes) fuse to form a single diploid zygote
Meiosis: Produces gametes




2

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