A test cross involves crossing an organism with

  1. a homozygous dominant individual
  2. a heterozygous individual
  3. itself
  4. a homozygous recessive individual
Answer

D) a homozygous recessive individual

Recessive tester reveals genotype. AS & A Level Biology · Topic 16 Inheritance · 16.2 The roles of genes in determining the phenotype

Biology MCQ · More A Level Biology: Inheritance MCQs · Practise