Question

what property of dna causes it to migrate tot he positive pole of the electrophoresis apparatus?
a.the positive charge of the dna
b.the negative charge of the dna
c.sugars found in dna
d.nitrogenous bases in dna

Answer 1

so i know dna is negative but since its migrating to positive pole i dont know if it like changes to positive

Answer 2

OK..so if u know that DNA is negative....so whats the doubt?

Answer 3

the negative DNA gets attracted to the positive pole of the electrophoresis apparatus and gets arranged in their ascending order according to their size..:)

Answer 4

because it can either be the negative like you said and it can also be the nitrogenous bases

Answer 5

hmm..u r rite...the nitrogenous bases are negatively charged and they in turn are responsible to the overall negative charge of DNA.......BUT ITs NOT A PROPERTY OF DNA's NEGATIVE CHARGE..:)

Answer 6

so im thinking it could be nitrognous then.....

Answer 7

thanks

Answer 8

What..u got the answer?

Answer 9

like i told you dna is originally negative and the question says property of dna causes it to migrate to the positive pole of the electrophoresis apparatus so since its like the opposite it narrows it down to b and d but since it not really likely to be b then its d

Answer 10

lol...thats kinda confusing! So at last D!

Answer 11

@alphadxg ..what do you think?

Answer 12

yea its confusing

Answer 13

Yea, It's D, because of the Negative charge in the DNA backbone.

Answer 14

i thought so thanks

Answer 15

why cant it be b? @alphadxg ..both are the same!

Answer 16

The backbone is the reason why it's negative in the first place @shreehari499

Answer 17

:)

Answer 18

yeah..option b is also rite...but to be precise..option d is correct!

Answer 19

yes