Dominant and Recessive Traits
Dominant and Recessive Traits
Notations used in Mendel’s experiments:
The dominant trait is usually represented by a capital letter. For example, tallness is represented by ‘T’ and dwarfness is represented by the corresponding small letter ‘t’. If tallness is due to a pair of dominant alleles, it is written as TT. If tallness is due to only one dominant allele, it is written as Tt. If both the alleles are recessive, making the organism dwarf, then it is written as tt. A homozygous condition is one in which both the alleles are of the same nature, e.g., TT or tt. A alleles are of different nature, e.g., Tt. When two heterozygous condition is one in which the characters are taken into account, the notation for the homozygous dominant could be AABB, and for the homozygous recessive it could be aabb. He performed following two experiments:
1. Inheritance of Traits for one Contrasting Character:
Mendel took pea plants with different characteristics such as height (tall and short plants).
2. Inheritance of Traits for Two Visible Contrasting Characters:
Mendel took pea plants with two contrasting characters, i.e. one with a green round seed and the other one with a yellow wrinkled seed.
An allele is said to be dominant if _________________ | |||
| Right Option : C | |||
| View Explanation |
If tall height (TT) is a dominant trait and short height is a recessive trait (tt) in the garden pea, then which of the following statement is true? | |||
| Right Option : B | |||
| View Explanation | |||
Mendel took _______________ to perform the experiment to understand inheritance of traits. | |||
| Right Option : A | |||
| View Explanation | |||
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