Biology 0610 · IGCSE · Chromosomes, genes and proteins

Chromosomes, genes and proteins — practice question

A student used a diagram to describe the inheritance of sex in humans. Which statements should she choose to fill boxes 1 and 2?

  • Abox 1: all have an X chromosome; box 2: half have an X chromosome and half have a Y chromosome
  • Bbox 1: all have a Y chromosome; box 2: half have an X chromosome and half have a Y chromosome
  • Cbox 1: half have an X chromosome and half have a Y chromosome; box 2: all have an X chromosome
  • Dbox 1: half have an X chromosome and half have a Y chromosome; box 2: all have a Y chromosome

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