Meiosis Flashcards

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1
Q

what is meiosis

A

meiosis is a process where a single cell divides twice to produce four cells containing half the original genetic information. It is a nuclear and cellular division for producing gametes.

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2
Q

four differences between meiosis and mitosis

A
  1. in meiosis a parent cell divides twice
  2. four daughter cells are produced in meiosis (not two)
  3. In meiosis chromosomes number is halved (diploid to haploid)
  4. daughter cells produced in meiosis are not genetically identical
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3
Q

how many phases are there in meiosis

A

eight

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4
Q

what are the phases of meiosis

A
  • prophase 1
  • metaphase 1
  • anaphase 1
  • telophase 1
  • prophase 2
  • metaphase 2
  • anaphase 2
  • telophase 2
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5
Q

during the second phase of division (meiosis) what occurs differently

A

the chromosomes during metaphase line up perpendicularly at a 90 degree angle

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6
Q

significant features of meiosis

A
  1. 2 successive divisions
  2. first division separates homologous chromosomes into separate cells
  3. second division separates chromatids into separate cells
  4. four haploid daughter cells
  5. each having half the number of chromosomes of parent
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