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).
Eye color in the fruit fly is said to be sex-linked. This simple means that the gene for eye colour is ______________________ | |||
| Right Option : D | |||
| View Explanation | |||
___________________ took pea plants with different characteristics to study dominant and recessive traits. | |||
| Right Option : A | |||
| View Explanation | |||
An allele is said to be dominant if _________________ | |||
| Right Option : C | |||
| View Explanation |
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