DNA Composition and Base Pairing

The video tutorial explains a DNA problem involving 880 guanine nucleotides, which account for 22% of the total nucleotides. Using Chargaff's rule, the instructor calculates the percentages of cytosine, thymine, and adenine. The video demonstrates how to determine the length of the DNA fragment, which is 2000 base pairs, and concludes with a summary of the solution.

What percentage of the total nucleotides does guanine account for in the given DNA molecule?

• 28%

• 22%

• 44%

• 56%

According to Chargaff's rule, which nucleotide pairs with guanine?

• Cytosine

• Thymine

• Uracil

• Adenine

If guanine makes up 22% of the DNA, what percentage does cytosine make up?

• 44%

• 22%

• 28%

• 56%

What is the combined percentage of thymine and adenine in the DNA molecule?

• 22%

• 28%

• 44%

• 56%

How many adenine nucleotides are present if they make up 28% of the DNA?

• 880

• 1120

• 2240

• 1760

If thymine makes up 28% of the DNA, how many thymine nucleotides are there?

• 2240

• 880

• 1760

• 1120

What is the total number of base pairs in the DNA fragment?

• 2000

• 1000

• 3000

• 4000

How many total bases are present in the double-stranded DNA?

• 4000

• 3000

• 5000

• 2000

What is the length of the DNA fragment in base pairs?

• 2000 base pairs

• 4000 base pairs

• 1000 base pairs

• 3000 base pairs

What is the total percentage of guanine and cytosine in the DNA?

• 44%

• 28%

• 22%

• 56%