If a segment of DNA has 20 adenine in its base composition what percent thymine is there?

Answer 1

The concentration of A must be equal to the concentration of T and the concentration of G must be equal to the concentration of C. This is because of the base pair rules that state that A pairs with T and G pairs with C. If you have a gene where [A] is 20%, this means that [T] also equals 20%. This puts the total concentration of A and T at 40%. Therefore the concentration of G and C is 100-40 which is 60%. This means that the concentrations of G and C are each 30%.

[]=concentration

Answer 2

If DNA has 20 percent of Adenine bases then the percentage of Thymine would also be 20 percent. This is because Adenine and Thymine pair together, so they will always have the same percentage.

Answer 3

it is 12%

becase G=C and A=T and so if C=38% also G=38% according to Chargaff's rule.

thus 38 +38 = 76% and % is out of 100 thus 76-100 to find the remaining which =to 24 and this is for both A and T , to find just for T -divide by 2 = 12% of Thymine!!

Answer 4

For each adenine there is one thymine in a DNA segment. If there are 20 molecules of adenine in a given DNA segment, you have 20 molecules of thymine there in the same segment. There is one to one ratio between both of them.

Answer 5

Since adenine always pairs with thymine in DNA, the percentage of thymine would also be 20%, as they are present in equal amounts due to the complementary base pairing rule.

Answer 6

It is 28 per cent. This is because of complementary base pairing. Every adenine (A) in one strand is paired by hydrogen bonding with a thymine (T) in the complementary strand.

Answer 7

Equal To That Of Thymine :)

By. Tommy W.

Answer 8

theee answeeer is 28% becaauseee imm a ganngstter & iknoww thee answeer =D-savageee <3

Answer 9

If the DNA is double stranded, percentage of thymine has to be the same in accordance to Chargaff's rules.

Answer 10

Equal to the percentage of thymine