2️⃣. Pre Assessment Meiosis and Homologous Pairs

A human body (somatic) cell usually has how many chromosomes?

• 6

• 22

• 4

• 46

If the diploid number of carrots is 18, the haploid number is

• 18

• 9

• 27

• 36

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Why do we need meiosis?

• To double the number of chromosomes going into sex cells
• To halve the number of chromosomes going into sex cells
• To triple the number of chromosomes going into sex cells
• To not change the number of chromosomes going into sex cells

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The result of meiosis is:

• two diploid cells
• two haploid cells
• four diploid cells
• four haploid cells

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Meiosis makes sperm and egg cells. In humans, sperm and egg cells each have _____ chromosomes. Therefore a fertilized human egg cell (sperm and egg cell combined) would create a cell with _____ chromosomes.

• 23, 46
• 46, 23
• 2, 4
• 50, 100

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NGSS.HS-LS3-1

How many daughter cells are produced from meiosis ?

• 10
• 6
• 4
• 2

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NGSS.HS-LS3-2

Human eggs and sperm are _____, and each has ____ chromosomes.

• diploid, 23
• diploid, 46
• haploid, 23
• haploid, 46

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NGSS.HS-LS3-2

NGSS.HS-LS3-1

What are gametes?

• sex cells
• body cells
• human cells
• plant cells

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NGSS.HS-LS3-1

What are homologous chromosomes?

• Pairs of chromosomes with different genes on each.

• Pairs of chromosomes with the same genes on each.

• Pairs of chromosomes with no genes.

• Pairs of chromosomes with the wrong genes on each.

sex cells (egg, sperm, pollen)

• games
• gamete
• somatic 
• neurons

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NGSS.HS-LS3-2

NGSS.HS-LS3-1