X and Y chromosomes / genetic cross diagrams

  • Created by: F.W1234
  • Created on: 09-04-18 12:24
  • 23 pairs in a normal body cell (46 individual)
  • 22 of these matched pairs control characteristics
  • The 23rd pair are labelled ** or XY, they decide your sex.
  • Males have XY and Females have **
  • When the gametes are made its a 50/50hance that a sperm cell will get the X or the Y chromosome.
  • All egg cells have X as their alleles are ** there homozygus.

Genetic diagrams are just models that are used to show the possible genetic outcomes.

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