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
nataly862011 [7]
3 years ago
13

An organism's genome is analyzed and found to contain 18% guanine. What percentage of that organism's DNA is adenine?

Biology
1 answer:
Oxana [17]3 years ago
6 0

Answer:

32%

Explanation:

According to Chargaff in his complementary base pairing rule, he stated that the proportion of purine and pyrimidine bases is equal to 100%

That is, A + T + G + C = 100%

Where A=T and G=C i.e the proportion of each base pair is equal.

Hence, if the Guanine content is 18%, it means the Cytosine content of that DNA molecule must also be 18%. Therefore:

18 + 18 + A + T = 100

A + T = 100 - 36

A + T = 64

If the sum proportion of Adenine and Thymine is 64% and each must contain equal proportions, A or T = 64/2 = 32

Hence, Adenine contains 32%, likewise Thymine.

You might be interested in
Name two examples of catastrophic events which could lead to a mass extinction?
Lemur [1.5K]

Asteroid impact

Volcanic eruptions

Explanation:

Asteroid impact and volcanic eruptions are two common events that could lead to a mass extinction.

A mass extinction is an abrupt decrease in life on earth due some catastrophic event.

  • The collision of a large bolide on the surface of the earth is a catastrophe in itself.
  • The collision and its aftermath have destructive consequences on life.
  • The force of the collision can reverberate in form of vibration throughout the earth.
  • It can cause heating of the earth surface.
  • Volcanic eruptions can become global phenomenon that upsets the earth balance.

Learn more:

Extinction brainly.com/question/10860460

#learnwithBrainly

8 0
3 years ago
Without adding specific regulatory proteins, how might you stimulate transcription from the gene of interest relative to the tra
german

Answer:

By transfecting small activating RNAs

Explanation:

Small activating RNAs (saRNAs) are an emerging class of non-coding RNAs (ncRNAs) that are capable of activating gene expression at transcriptional level. The saRNAs are small double-stranded RNAs (dsRNAs) that bind to promoter sequences in order to activate the expression of target genes. These molecules are structurally similar to small interfering RNAs (siRNAs), i.e., they also have a size of 21 nucleotides and two overhang nucleotides at the 3' end of both strands.

4 0
2 years ago
Prairie dogs are a species whose very presence contributes to the existence of the ecosystem in which it lives. Prairie dogs con
Andrew [12]

Answer:

Explanation:

Key stone species

6 0
2 years ago
What are some circumstances during which you might use your body's stores of glycogen?
Alinara [238K]
1. During intense exercise, where the energy output required from the cell exceeds the supply of glucose from the blood.
2. In an ischemic event, where perfusion is either disrupted through a clot, hemorrhage or systemic hypotension. 
5 0
3 years ago
Water exits the leaves of plants and enters the atmosphere. What is this process called?
monitta
If u are specificly talking about water in the air space of the leaf going out into the atm , than that's called simple diffusion .
4 0
3 years ago
Other questions:
  • Name three arthropod head appendages and state their functions.
    15·1 answer
  • (A). in an ecosystem, organisms are dependent on each other for their survival. small fish eat plankton. in the fish, chemical e
    11·3 answers
  • An organism genotype is its
    13·2 answers
  • To be useful in the scientific method, an observation must be:
    8·1 answer
  • What needs to be in order for something to be scientific?
    13·1 answer
  • What is the measure of the change in velocity during a certain period of time
    8·1 answer
  • Reflect your understanding on : ‘Corona VIRUS ‘
    5·1 answer
  • PLEASE HELP ME WILL GIVER THE BRAINLIEST
    10·1 answer
  • A portion of a DNA strand is shown.
    9·1 answer
  • Which element provides strength to the exoskeletons of clams and oysters?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!