Heritable Variations - Mutation and Generic Recombination


 
 
Concept Explanation
 

Heritable Variations - Mutation and Generic Recombination

Heritable Variation

Heredity involves the transmission of characteristics from parents to their offspring. Among sexually reproducing organisms, the progeny are not exact duplicates of their parents.

Heritable variation is the result of changes in the arrangement of genes on the chromosomes and changes in the sequence of the bases that constitute DNA. Such changes occur spontaneously and randomly in the DNA, which undergoes duplication just before the cell divides.

Duplication is done with great precision, but once in about ten million duplications there is an error as a different base may be put in place of the correct one.

.... (More Text Available, Login?)
Sample Questions
(More Questions for each concept available in Login)
Question : 1

Heredity involves the ______________________ of characteristics from parents to their offspring

 

Right Option : C
View Explanation
Explanation
Question : 2

_______________ involves the transmission of characteristics from parents to their offspring. 

Right Option : A
View Explanation
Explanation
Question : 3

Which of the following are correct ?

(a)  Among  sexually reproducing organisms, the progeny are not exact duplicates of their parents.

(b)  Change occur spontaneously and randomly in the DNA, which undergoes duplication just before the cell divides .

 

 

Right Option : C
View Explanation
Explanation
 
Video Link - Have a look !!!
 
Language - Hindi/English
 
 
 
Related Videos


Students / Parents Reviews [20]