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If T is for tallness and t for dwarfness, what shall be the genotype of a tall pea plant according to Mendelism?
- a)TT
- b)Tt
- c)Either TT or Tt
- d)none
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
If T is for tallness and t for dwarfness, what shall be the genotype o...
Genotype of a tall pea plant according to Mendelism is either TT or Tt.
Explanation:
- According to Mendel's laws of inheritance, tallness (T) is a dominant trait, while dwarfness (t) is a recessive trait.
- Dominant traits are represented by capital letters, and recessive traits are represented by lowercase letters.
- In this case, T is for tallness and t is for dwarfness. This means that a tall pea plant can have either two dominant alleles (TT) or one dominant and one recessive allele (Tt).
- The genotype refers to the genetic makeup of an organism, specifically the combination of alleles present for a particular trait.
- A tall pea plant with the genotype TT has two dominant alleles and is considered homozygous dominant.
- A tall pea plant with the genotype Tt has one dominant and one recessive allele and is considered heterozygous.
- Both TT and Tt genotypes result in the tall phenotype because the dominant allele masks the presence of the recessive allele.
- The only genotype that would result in the dwarf phenotype is tt, which means an organism would need to inherit a recessive allele from both parents.
- Therefore, the correct answer is option C, which states that the genotype of a tall pea plant according to Mendelism can be either TT or Tt.
Explanation:
- According to Mendel's laws of inheritance, tallness (T) is a dominant trait, while dwarfness (t) is a recessive trait.
- Dominant traits are represented by capital letters, and recessive traits are represented by lowercase letters.
- In this case, T is for tallness and t is for dwarfness. This means that a tall pea plant can have either two dominant alleles (TT) or one dominant and one recessive allele (Tt).
- The genotype refers to the genetic makeup of an organism, specifically the combination of alleles present for a particular trait.
- A tall pea plant with the genotype TT has two dominant alleles and is considered homozygous dominant.
- A tall pea plant with the genotype Tt has one dominant and one recessive allele and is considered heterozygous.
- Both TT and Tt genotypes result in the tall phenotype because the dominant allele masks the presence of the recessive allele.
- The only genotype that would result in the dwarf phenotype is tt, which means an organism would need to inherit a recessive allele from both parents.
- Therefore, the correct answer is option C, which states that the genotype of a tall pea plant according to Mendelism can be either TT or Tt.
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