BIOLOGY
NUCLEIC ACIDS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
If a DNA contains 22% adenine in an organism, what is the percentage of thymine it must contain?
|
|
22%
|
|
|
28%
|
|
|
44%
|
|
|
56%
|
Explanation:
Detailed explanation-1: -The sum of all four percentages must equal 100%. We know that the sample is 22% adenine; this tells us it is also 22% thymine. Since cytosine and guanine are present in equal amounts, we can simply divide their sum by 2. The final composition is 22% adenine, 22% thymine, 28% cytosine, and 28% guanine.
Detailed explanation-2: -In a DNA sample, the percentage of adenine is 40% and percentage of thymine is 60%.
Detailed explanation-3: -Answer and Explanation: A double-stranded DNA molecule with 20% thymine would contain 30% guanine.
Detailed explanation-4: -Thymine (T) makes up 28% of the nucleotides in a sample of DNA from an organism.
There is 1 question to complete.