Biology 5090 · O Level · Inheritance

Inheritance — practice question

Which row gives the sex chromosomes when the parents have a baby boy?

  • Ain the egg cell: X; in the sperm cell: X; in the zygote: XX
  • Bin the egg cell: X; in the sperm cell: Y; in the zygote: XY
  • Cin the egg cell: Y; in the sperm cell: X; in the zygote: XY
  • Din the egg cell: Y; in the sperm cell: Y; in the zygote: YY

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