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Diploid & Haploid Cells

Kimball Biology

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n

  • n = the number of types of chromosomes a cell has

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Diploid: Definition

  • 2n -means there are two of each type of chromosome (2 sets)
  • In this cell, n = 2, so 2x2 = 4 chromosomes for a diploid cell
  • In humans, n=23, so 2x23=46 chromosomes for a diploid cell

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Picture 1

  • Use any color for blue, any color for purple (just be consistent!)
  • 2n - Diploid

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Homologous Chromosomes

  • A pair of (set of 2) chromosomes of the same type (size)
  • Label the homologous chromosomes in picture 1

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Somatic Cells

  • Name for a diploid body cell

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Picture 2

  • Use the same colors as you did in picture 1
  • Label the homologous chromosomes
  • Still DIPLOID

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Haploid

  • n – means there is only one set of each type of chromosome.
  • In this cell, n = 2, so a haploid cell has 2 chromosomes
  • In humans, n = 23, so a haploid cell has 23 chromosomes

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Gamete

Name for a haploid sex cell (sperm OR egg)

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Picture 3

Use the same color scheme as the other pictures

Under the picture, label the cell:

n - Haploid