1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
NeX [460]
3 years ago
7

If there is 13% guanine in a DNA molecule how much cytosine and thymine would there be ?

Biology
1 answer:
Alenkinab [10]3 years ago
8 0

Answer:

13% cytosine

37% thymine

Explanation:

There are two types of nucleotides based on their structures - purines and pyrimidines.

The purines are adenine and guanine. The pyrimidines are thymine and cytosine.

Chargaff's rule states that the ratio of purines to pyrimidines in a molecule of DNA is 1:1

Therefore, the total number of A+G is the same at the total number of C+T.

All 4 bases together must equal 100% of the DNA molecule

If there is 13% guanine, and guanine always pairs with cytosine, there is also 13% cytosine.Together, that is 26% of the total sample.

100-26 = 74% of the total of adenine and thymine.

Since there are equal amounts of A and T, we know that the DNA sample is 74/2 = 37% thymine

You might be interested in
How are nucleus and chloroplasts different?
Kamila [148]

Answer:

Chloroplasts are endosymbiotic descendants of photosynthetic cyanobacteria-like prokaryotes that were incorporated into cells more than a billion years ago.

Explanation:

Photosynthesis converts electrochemical energy from light into sugars and acts as the carbon source of the cell.

4 0
3 years ago
Read 2 more answers
several species of warblers (bird) live in different areas of the same tree . this phenomenon is known as
Gekata [30.6K]

Answer:

This phenomenon is called Niche Differentiation, it happens when several species live in the same area but different parts. Hope that helps! :)

6 0
3 years ago
What 3 molecules that aren't DNA helps us learn about evolution?
max2010maxim [7]
We know, DNA is the main molecule by which scientists can learn about evolution by comparing the DNA structure between two different organisms. 
But, in addition to DNA (which is most helpful & important) still, there are 3 molecules that can help us, They are:

1) RNA : - It is found in cytoplasm, as DNA transfers it's codes into RNA during Central dogma, it can help us in evolution studies.

2) Proteins: - Another helpful feature, into which RNA transforms in Central Dogma.

3) Pseudogenes: - It is also known as "Non-coding DNA" It is extra <span>DNA in a genome that do not get transcribed into RNA to synthesize proteins. They can also help us in Evolutionary studies.

Hope this helps!</span>
4 0
3 years ago
Pls help me answer this question I'll make you Brainliest​
aalyn [17]
So the dark butterfly camouflages better on the tree. Where as the white one can clearly be seen and identified. A predator will also easily spot it and kill it. The dark butterfly has evolved over time to the color that it is, to best help it survive. This is also shown in the tread on the graph.


Hope this helps!!
4 0
3 years ago
Among the bacteria and archaea, which process produces results that are most similar to the results of sexual production in euka
klemol [59]
Conjugation - this is when bacteria exchange genes among each other. Sexual reproduction is when genes from the male and female are fused to create a new diverse zygote. Bacteria can do a similar process by conjugation.<span />
7 0
2 years ago
Read 2 more answers
Other questions:
  • Which of the following does not require a medium through which to travel in word which can travel through empty space
    12·1 answer
  • Explain why two distinct species choose to help each other and what is that called?
    5·1 answer
  • Janice was researching combustion. During her research, she came across two different hypotheses—proposed at different times in
    12·1 answer
  • Which is the first step to occur during the process of replication?
    15·1 answer
  • the molecules that make up food contain energy. How does the human body get energy from the food molecules?
    9·2 answers
  • In many species, there are two representatives of each chromosome. In such species, the characteristic number of chromosomes is
    5·1 answer
  • Infectious agents cause an....
    12·2 answers
  • Which is true concerning how fossils are used as evidence?
    15·2 answers
  • Anyone ?? This is a timed this
    5·2 answers
  • I don't really understand it, so can you help? thank you! ​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!