A double stranded DNA consists of 30%adenine.what will be the % of thiamine and guanine
Answers
Answer:
thymine (20%)
guanine (30%)
Explanation:
Basically, the four nitrogen bases of DNA are categorized into two types:
purine (adenine, guanine) and pyrimidine (thymine, cytosine). Adenine pairs with thymine and guanine pairs with cytosine. The purine must have the same amount of percentage, so guanine will also be 30 percent. The pyrimidine will have 20 percent in order to have 50 percent each when paired with the purine; hence, thymine will be 20 percent.
Thymine = 30%
Guanine = 20%
Explanation:
Let's assume that;
Adenine + Thymine + Guanine + cytosine = 100.
Given:
Adenine = 30%
According to Chargaff's rule Adenine pairs with thymine, this implies that an equal number of Adenine and thymine is present in a double-stranded.
Adenine = Thymine = 30%
Similarly, Guanine = cytosine.
We can assume guanine and cytosine as x;
so, 30+30+2x = 100
2x = 100-60
x = 20.
Guanine = Cytosine = 20