Question

Which of the following is not correct for any given length of DNA? A) G/C=1 B) A+T=G+CC) A+G=T+C D) A+ T/G+C may OR may not be equal to 1​

Answer 1

યોગ્ય ગીત મુક્યા જાય એટલે એ પણ તે

Answer 2

answer is B)

Explanation:

• according to Chargaff's rule amount of purine A& G is equal to amount of pyrimidine C& T of a ds DNA.
• so, A+G=T+C
• A pair with T and G pair with C. so the amount of A = amount of T and amount of G= amount of C
• so G/C=1
• suppose A= 30%, G=40% then T=30% and C= 40%
• A+T/G+C=(30%+30%)/(40%+40%)=0.75≠1
• or, suppose if A=50% and G= 50% then T=50% and C=50%
• A+T/G+C=(50%+50%)/(50%+50%)= 1
• A+T or G+C may or may not equal to 1
• so the A+T = G+C ,option B is incorrect.