Q. 25

Mendel crossed a

Answer :

When two pairs of traits are combined in a hybrid segregation of one pair of character is independent of the other pair of the characters.



OR


Miller’s experiment:


• In 1953, S.L. Miller, created similar conditions in a laboratory scale as he believed to have existed during Earth's former years.


• He created electric discharge in a closed flask containing


• CH4, H2, NH3 and water vapour at 800 degrees C.



Observation:


1. He observed formation of amino acids. In similar experiments others observed, formation of sugars, nitrogen bases, pigment and fats.


Contribution:


This experiment helped theorize the theory of abiogenesis. The first form of life arose slowly through evolutionary forces from non- living molecules.


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