Lead to disorders ,syndromes ,abnormalities in body
When the cell divides into two,each cell gets a copy of each DNA of the chromosome along with the whole cellular apparatus.Complete accuracy in DNA copying leads to exactly identical cells but any error (incorrect) in duplication can lead to dissimilar cell or variations. The error in DNA copying must be at Max accuracy (slow).This error never being fast because this leads to too much error in DNA and the individual (offspring) didn\’t tolerate and die.
Error in dna copying leads to variation in offspring, (i) .variation in human beings.(for example,our ancestors are like apes,when they reproduce there are some errors in their dna copying leads to variation in them to become human beings).(ii).Error in dna copying must be slow(small), if error in dna copying was fast(large) then child would not survive (more than 2 months) and die.(iii).Child is different from their parents (by apperance,by hair,by eye colour,etc.) that is why we all look differently,no one in this world look similar.(iv)if dna copying is 100% correct,then we all look similar.So, error in dna copying is good for us.
Incorrect DNA copying can create variation in the offspring. It can lead the the embryo different from others