biology

units B1 & B2

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1. which pair of chromosomes control whcih sex a person is?

  • X or Y / pair 23
  • 21st pair
  • 10th pair
1 of 13

Other questions in this quiz

2. what are all these classed as: hair colours, eye colours, height, weight,skin colour

  • variations
  • factors
  • characteristics

3. what do we call a differnt pair of genes

  • DNA
  • alleles
  • chromosomes

4. how does a gene control what a cell does

  • they control which proteins a cell makes
  • they tell the cell what to do
  • they control the size of the cell

5. how many pairs of chromosomes are there in the human cell

  • 74
  • 23
  • 46

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