1
Question
Assertion :
Human ancestors never used their tails and so the tail expressing gene has disappeared in them.
Reason: Lamarck's theory of evolution is popularly called theory of continuity of germplasm
Assertion :
Human ancestors never used their tails and so the tail expressing gene has disappeared in them.
Reason: Lamarck's theory of evolution is popularly called theory of continuity of germplasmOpen in App
Solution
The correct option is D Both Assertion and Reason are incorrect
Human ancestors reduced the usage of tails as they shifted from arboreal habitat to terrestrial, due to which the during the course of evolution the tail was lost. However humans still possess the tail bone as vestigial structure which means that the genes for tail expression have not disappeared but are prevented from expressing.Lamarck's theory explains about inheritance of acquired characters. Acquired characters are skills developed by an individual during the life time which cannot be transferred to the progeny.So, the correct answer is 'Both Assertion and Reason are incorrect'
Human ancestors reduced the usage of tails as they shifted from arboreal habitat to terrestrial, due to which the during the course of evolution the tail was lost. However humans still possess the tail bone as vestigial structure
which means that the genes for tail expression have not disappeared but are prevented from expressing.
Lamarck's theory explains about inheritance of acquired characters. Acquired characters are skills developed by an individual during the life time which cannot be transferred to the progeny.
So, the correct answer is 'Both Assertion and Reason are incorrect'
Suggest Corrections
0
Similar questions