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Bingel [31]
3 years ago
9

Which statement is true about DNA?

Biology
2 answers:
Effectus [21]3 years ago
8 0
Only one of the original DNA strands acts as a templates during replication.
11Alexandr11 [23.1K]3 years ago
6 0

Answer:

Only one of the original DNA strands acts as a template during replication.

Explanation:

The DNA of every living cell replicates prior to division. It occurs in the S-phase of interphase stage. The DNA is a long double-helical structure. Before the actual duplication occurs, the double strand of the DNA needs to be unwound. This unwinding is done by HELICASE by breaking the weak hydrogen bonds that binds each base pair.

After the unwinding, two separate strands result with only one of the strands serving as a template for the new strand synthesized by DNA polymerase. DNA polymerase enzyme synthesizes new DNA strand by adding nucleotide bases that are complementary to each template strand.

i.e. DNA polymerase will add nucleotide G to the growing strand if it reads nucleotide C on the template strand.

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As a scientist, you seek to prove that DNA is the hereditary macromolecule by replicating the Hershey-Chase experiment. You cult
weeeeeb [17]

Answer:

The correct answer is option e. "None of the above".

Explanation:

The Hershey-Chase experiment helped to prove that DNA was the genetic material, by specifically labeling the DNA material of a bacteriophage with phosphorus-32. In this experiment the lambda phage is labeled with heavy and light Cl. CI-36, the one that is heavy and radioactive, corresponds to Chlorine-36. Chlorine is not an element found in DNA such as phosphorus, therefore lambda DNA will not be labeled and no radioactivity will be detected.

6 0
3 years ago
In gel electrophoresis, how are the dna samples added to the wells?.
jenyasd209 [6]

DNA samples are added into wells with the help of electric current.

<h3>How dna samples added to the wells?</h3>

DNA samples are added into wells at one end of a gel whereas an electric current is applied to pull them through the gel. DNA fragments are negatively charged, so they move towards the positive electrode.

So we can conclude that DNA samples are added into wells with the help of electric current.

Learn more about dna here: brainly.com/question/16099437

5 0
2 years ago
How can humans reduce the amount of endangered and extinct species?
Andrews [41]
There are many ways humans can reduce the amount of endangered and extinct species. However, I would say by reducing pollution and logging/mining. Nearly 318 species have become extinct due to pollution. The reduction of carbon emissions would be a good way to curb the amount of pollution produced by humans.
4 0
2 years ago
Which statement is true?
Alexandra [31]
C. pear is not a fossil fuel because it has biologic origins making it a biofuel
3 0
3 years ago
CAN SOMEONE HELP??? PLEASE
34kurt

Answer:

C COMMON ANCESTOR

Explanation:

7 0
3 years ago
Read 2 more answers
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