Question

if a double stranded DNA has 20% of cytosine, calculate the percent of adenine in the DNA.​

Answer 1

Answer:

In a ds DNA cytosine = 20% ,so guanine = 20%

( C = G )

So C + G = 20 + 20 = 40 %

THEN

A + T = 100 - C + G

=> A + T = 100 - 40

=> A + T = 60

we know that A = T

SO here both Adenine and Thymine have each 30 % .

So your answer will 30 %..

Explanation:

Hope it helps you ..

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Answer 2

Answer:

☆ Information:-

1. adenine , guanine are the purines present in the dna
2. cytosine,thymine are pyrimidines present in dna
3. H-bonding present between the nitrogen bases of adjacent strands
4. A=T(double bond)
5. G-=C(triple bond)

now returning to your ques....

C=20%..that means G will also=20%

and according to chargaaffs rule:-

purines=pyrimidines...

A+T+G+C=100%

2T + 40%=100%(adenine will be equal to thymine)

T=30%

A=30%

hope it helps...

Good luck ♧♧