Dwarf pea plants (lele) are short because

  1. the le allele codes for a non-functional enzyme in gibberellin synthesis
  2. they lack chlorophyll
  3. they make too much gibberellin
  4. the Le allele is recessive
Answer

A) the le allele codes for a non-functional enzyme in gibberellin synthesis

Little active gibberellin, less elongation. 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