Biology 5090 · O Level · Inheritance

Inheritance — practice question

In fruit flies, the allele for an ebony coloured body is recessive compared with the allele for a grey coloured body. During an investigation, a fly with an ebony body is crossed with a fly with a grey body. If the grey-bodied fly is heterozygous, what body colour will the offspring have?

  • Aall ebony
  • Ball grey
  • Chalf ebony and half grey
  • Dthree-quarters grey and one-quarter ebony

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