Acquired and Inherited Traits
Acquired and Inherited Traits
Acquired and Inherited Traits:
The characteristics developed during the lifetime of an individual, that cannot be passed on to its progeny are termed as acquired traits (characters). The lifetime experiences of an individual cannot be passed to their offprings and are not controlled genetically. For example, if we breed a group of mice and remove the tails of these mice by surgery, the progeny would not be tailless because removal of the tail cannot change the genes of germ cells of the mice and cannot direct the evolution. Thus, it proves that change in non-reproductive tissues cannot be passed on to the DNA of the germ cells.
Inherited traits
are those characteristics which are received by offsprings from their parents (i.e. from one generation to another because they are controlled by genes) like colour of hair and eyes, shape of nose, earlobes, etc.
Assertion: The establishment of reproductive isolations in an event of biological significance. Reason: In the absence or reproductive isolation species can merge back into single population. | |||
| Right Option : A | |||
| View Explanation |
Assertion: DNA finger printing is a method in which polymerase chain reaction followed by DNA probe is used. Reason: A DNA finger print is inherited and therefore, resembles that of parents. | |||
| Right Option : A | |||
| View Explanation |
Which of the following are correct ? (a) The characteristics developed during the lifetime of an individual, that cannot be passed on to its progeny are termed as inherited traits . (b) The change in non-reproductive tissues cannot be passed on to the DNA of the germ cells. | |||
| Right Option : B | |||
| View Explanation | |||
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Om Umang
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