Gr8. .. T4.L2 .. Revision

Meiosis involves this many divisions of the nucleus.

• 1
• 2
• 3
• 4

Mitosis involves this many divisions of the nucleus.

• 1
• 2
• 3
• 4

Meiosis produces

• sex cells 
• clone cells
• prison cells 
• blood cells

Body cells of humans have ___ PAIRS of chromosomes

• 46
• 23
• 24
• 12

In the first division of meiosis, the ___ pairs line up, then separate.

• chromosome
• nuclei
• centriole
• spindle fibers

After meiosis, sex cells have ___ number of chromosomes as body cells

• the same
• half of the 
• a quarter of the
• more than the

Gametes are produced by this process . . .

• mitosis

• mitochondria

• cellular respiration

• meiosis

Why are your chromosomes arranged in pairs?

• Scientists have no idea
• Because you get one from your mom and one from your dad
• Because pairs can divide easier
• Because DNA is awesome

A number that describes how likely it is that a particular event will occur.

• Possibility

• Heredity

• Factor

• Probability

products of meiosis are genetically

• different
• identical