Two heterozygous tall plants (Tt × Tt) are crossed. What ratio of tall to short is expected?

  1. 3 : 1
  2. 1 : 2 : 1 tall only
  3. 1 : 1
  4. all tall
Answer

A) 3 : 1

TT, Tt, Tt are tall; tt is short. O Level Biology · Topic 17 Inheritance · 17.3 Inheritance

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