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Question : "A trait may be inherited, but may not be expressed." Justify this statement with the help of a suitable example. |
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Answer» Solution :Let us take the following EXAMPLE to justify the above statement. Mendel crossed TALL pea plants with dwarf pea plants. Mendel.s Observation `F_(1)` generation contained all tall plants. When `F_(1)`, c generation underwent selfing, the trait that was unexpressed in F, (dwarf) was observed in some `F_(2)` progeny. Thus, both traits, tall and dwarf, were expressed in `F_(2)` generation in the ratio 3:1. The above EXPERIMENT indicates that although both the traits of tallness and shortness were inherited in `F_(1)` plants, only the tallness trait was expressed. This shows that traits may not SHOW up in an individual but are passed on to the next generation. |
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