If thymine makes up 21% of the DNA nucleotides in the genome of a plant species, what are the percentages of the other nucleotides in the genome?

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Accepted Answer

Hello, everyone. Here's our next question. What is the percentage Of Adnan Citizen and I, I mean, present in an organism? If the percentage of guanine is 18%. Well, to figure this out, we're going to recall char gas rule which says the amount of G must equal the amount of C and any different given D N A strand. And similarly the amount of teams equal the amount of A. So with this in mind, we can right away say the percentage of G is 18%, then we know the amount of C Must equal 18%. Since Cytisine is the middle of the three things that a question asked us for, we can right away, go over to our answer choices and eliminate anything that doesn't have 18% in the middle. Here, you see that choice a does But choice B has 32% in the middle. So that's incorrect. Choice C has 32%. So that's incorrect. And choice D has 30%. So that's incorrect. So right away, we've got our correct answer here, Which is going to be choice a 32%, 18% and 32 now, we might another time have a question where we don't eliminate that easily. So let's see how to work through all the way there to get the percent of T. And A, we know that the amount of G plus C Plus the amount of a plus T must equal 100% total since DNA is made up of those four bases. So we know that 36%,, Which is 18% and 18% is our amount of cheap. Let's see, plus the amount of A plus T Must equal 100%. And therefore the sum of A&T must equal 64%. In which case, we just divide by two to get the amount of A and the amount of T. So the amount of A and the amount of tea Must equal 32% each. So looking back at answer choice, a sure enough, we have 32% for the percentage of ad mean 18% for Cida scene and 32% for timing. So we know that does confirm the choice. A 32%, and 32% is the correct answer. See you in the next video.

If thymine makes up 21% of the DNA nucleotides in the genome of a plant species, what are the percentages of the other nucleotides in the genome?

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Key Concepts

Base Pairing Rules

Chargaff's Rules

Total Percentage of Nucleotides