One question was if adenine has 29% how much does guanine have

[SOULXX]

Idk the answer to this need help
Before toMorrows test

[Coolgalbornin03Lo]

Idk the answer to this need help
Before toMorrows test

Adenine and thymine are pairs so I guess they’ll both have 19% each.

Then cytosine and guanine are pairs and they will have the other 62% so will be 31% each. So guanine is 31%

[SOULXX]

Adenine and thymine are pairs so I guess they’ll both have 19% each.

Then cytosine and guanine are pairs and they will have the other 62% so will be 31% each. So guanine is 31%

So it’s 31 percent ?

[SOULXX]

[Chocolatepistachio]

If adenine has 29% then thymine has 29% As adenine pairs with thymine.

Guanine has 21%

[SOULXX]

If adenine has 29% then thymine has 29% As adenine pairs with thymine.

Guanine has 21%

I’m so confused this other guy said 31

[lm21074]

I think I double posted this Who cares

What’s is the answer

Please refrain from double posting. Double posting will not get you an answer faster.

Are you not sure how to solve the question at all or are you stuck at a specific step?
It is important to understand how to solve the question, for your benefit in SACs.

What have you tried to figure out this question so far?

In the spoiler are some hints:

Spoiler

What base pair does adenine belong with?

Spoiler

This base pair has to have the same amount of it present in the DNA.

Spoiler

The next step is a bit of maths. Can you figure this out? There are 4 base pairs, in which adenine should be present in the same amount as thymine. Adenine and thymine are complementary base pairs (they go together) and so are cytosine and guanine.

extra info to help you remember the base pairs

You can remember this by remembering Apple Tart, Ginger Cake (A goes with T, G goes with C).

next step, the maths

We have 29% adenine, therefore 29% guanine. This is 58% of the DNA bases.
We need 100% of the DNA bases, not 58%.
100 - 58 = 42%
That means the G and C base pairs make up 42% of the DNA base pairs. We divide 42 by 2 to get 21% guanine and 21% cytosine, as there are usually equal amounts of G and C.

Chocolatepistachio beat me to it, but I'll leave this here.

[SOULXX]

Please refrain from double posting. Double posting will not get you an answer faster.

Are you not sure how to solve the question at all or are you stuck at a specific step?
It is important to understand how to solve the question, for your benefit in SACs.

What have you tried to figure out this question so far?

In the spoiler are some hints:

Spoiler

What base pair does adenine belong with?

Spoiler

This base pair has to have the same amount of it present in the DNA.

Spoiler

The next step is a bit of maths. Can you figure this out? There are 4 base pairs, in which adenine should be present in the same amount as thymine. Adenine and thymine are complementary base pairs (they go together) and so are cytosine and guanine.

extra info to help you remember the base pairs

You can remember this by remembering Apple Tart, Ginger Cake (A goes with T, G goes with C).

next step, the maths

We have 29% adenine, therefore 29% guanine. This is 58% of the DNA bases.
We need 100% of the DNA bases, not 58%.
100 - 58 = 42%
That means the G and C base pairs make up 42% of the DNA base pairs. We divide 42 by 2 to get 21% guanine and 21% cytosine, as there are usually equal amounts of G and C.

Chocolatepistachio beat me to it, but I'll leave this here.

I was never taught how to solve it it’s a question from a chapter review. What is the answer and how dk I woke it out

[whys]

I was never taught how to solve it it’s a question from a chapter review. What is the answer and how dk I woke it out

Have you tried following Im21074's hints? You can check the answer you get from following these hints with the answer provided by the two users above me. If you still do not understand, feel free to ask specifically what you don't understand so we can provide more targeted help.

[sweetiepi]

I was never taught how to solve it it’s a question from a chapter review. What is the answer and how dk I woke it out

As lm said in their spoiler, Adenine and Thymine must have the same number of bases, a combined total of 58% of bases. Guanine and Cytosine therefore take the remainder (100%-58).

Reminder: Guanine and Cytosine should have an equal amount of bases. If you get stuck, look at the spoiler in lm's post

(Beaten by whys)

[SOULXX]

As lm said in their spoiler, Adenine and Thymine must have the same number of bases, a combined total of 58% of bases. Guanine and Cytosine therefore take the remainder (100%-58).

Reminder: Guanine and Cytosine should have an equal amount of bases. If you get stuck, look at the spoiler in lm's post

(Beaten by whys)

I’m very very confused I don’t understand it at all

[Bri MT]

I’m very very confused I don’t understand it at all

Do you understand what complimentary base pairs are?

[sweetiepi]

I’m very very confused I don’t understand it at all

Okay, I'll start from the start.

A piece of DNA is made of four bases (Adenine (A), Thymine (T), Cytosine (C), Guanine (G)). In this piece of DNA, the composition of it include 29% of Adenine.
Complementary pairs is the phenomenon where A and T share a hydrogen bond with each other, and C and G also share a hydrogen bond with each other. (That is, you cannot have A and G pair up, nor T and C- just A and T together, then C and G together)

As Adenine and Thymine are complementary, they should have 29% of total bases each. (An equal number, so 29+29 =58)

That leaves both Guanine and Cytosine to make up the rest of the bases. (100-58 = 42%).

As Guanine and Cytosine are complementary, they also must have equal numbers of bases. (42/2 = 21).

Therefore, 21% of the DNA bases in this particular piece of DNA are Guanine.


Hope this helps

[Calebark]

I'm really only reiterating what the others have (wonderfully) explained, but if you're a visual learner, hopefully this helps.

poorly represented visual aid enclosed