Respuesta :

mayaloser

Answer:

30% Thymine

Explanation:

If 30% of Adenine is present, it would be reasonable to assume that 30% of Thymine will be present, as the ratio between the two complementary nitrogenous bases will be roughly equal.

Therefore, that leaves us with 40% between Cytosine and Guanine. Since the ratio between them would be equal, it gives us 20% of Cytosine and 20% of Guanine.

Therefore:

30% of A + 30% of T + 20% of C + 20% of G = 100% DNA

20% of thymine is present in a DNA sample that contains 30% cytosine.

What is DNA?

  • DNA stands for deoxyribonucleic acid.
  • It is a polynucleotide chain.
  • A nucleotide consists- a nitrogenous base, deoxyribose sugar and phosphate group.
  • Nitrogenous base are of two types- Purines(Adenine and Guanine) and Pyrimidine(Cytosine and Thymine).
  • Adenine pairs with Thymine and Guanine pairs with Cytosine.

What is thymine?

  • Thymine is a Pyrimidine nitrogenous base which forms double bond with Adenine.

What is cytosine?

  • Cytosine is a Pyrimidine nitrogenous base which forms a triple bond with Guanine.

There is 100% nitrogenous base in DNA.

30% of Cytosine means 30% of Guanine=60%(30+30)

So 100-60=40%(Adenine +Thymine)

So, Thymine and Adenine each will have=20%

Hence, the answer is 20% Thymine.

To know more about Thymine here

https://brainly.com/question/907132

#SPJ2

Otras preguntas