Question

Considering tallness and dwarfness, tallness is more wide spread among pea plants, because________________

• A. Tallness is dominant over dwarfness
• B. Tallness is determined by one gene having many effects
• C. Tallness is determined by many genes having multiple effects
• D. None of these

Answer 1

The correct option is A Tallness is dominant over dwarfness

• A dominant allele produces a dominant phenotype in individuals who have one copy of the allele, which can come from just one parent.
• For a recessive allele to produce a recessive phenotype, the individual must have two copies, one from each parent.
  
• Here, tallness is dominant, which gets expressed in both homozygous and heterozygous conditions.