If a plant shows the tall trait, what can its genetic combination be?
Answer and explanation
Correct answer: Two dominant alleles or one dominant and one recessive allele
In a simple Mendelian example, tallness is treated as the dominant trait and dwarfness as recessive. If T represents tallness and t represents dwarfness, a tall plant may have TT or Tt. In both combinations, at least one dominant T allele is present and the tall phenotype appears. Only tt produces a dwarf plant, so option B is correct; the other choices either describe the recessive condition or are biologically impossible.
Frequently asked questions
What is the correct answer to this question?
Two dominant alleles or one dominant and one recessive allele
Why is this the correct answer?
In a simple Mendelian example, tallness is treated as the dominant trait and dwarfness as recessive. If T represents tallness and t represents dwarfness, a tall plant may have TT or Tt. In both combinations, at least one dominant T allele is present and the tall phenotype appears. Only tt produces a dwarf plant, so option B is correct; the other choices either describe the recessive condition or are biologically impossible.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Heredity and Evolution.
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