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
Brrunno [24]
3 years ago
8

PCR (polymerase chain reaction) is an excellent method of generating copies of target DNA. If a single piece of double stranded

DNA (dsDNA) is put into a PCR machine, how many dsDNA segments will there be after 3 rounds?
Biology
1 answer:
enyata [817]3 years ago
8 0

Answer: After 3 rounds, 8 segments having 2 original strands on different segments will be present.

Explanation:

The polymerase chain reaction selectively and repeatedly copy the double stranded DNA (dsDNA) in the PCR machine.

1st round:

Single piece of double stranded DNA (dsDNA) unwinds in two seperate strands, before complementary nucleotides are synthesized to establish double helix.

2nd round:

The two dsDNA yields 4 segments before complementary nucleotides are synthesized

3rd round:

The four dsDNA yields 8 segments before complementary nucleotides are synthesized.

Therefore, at the end of 3 rounds, the two original strands will be present on the 8 different segments of copied DNA.

You might be interested in
Why would a vascular system be an adaptation for a plant on land?
Olin [163]

Answer:

Vascular have a system that is intricate and the plant can move water to distribute it to the whole plant. Vascular plants are able to grow bigger due to this ability. Example of this would be a tree or a flower Non vascular plants are usually small plants that are close to the ground.

Explanation:

Bryophytes, which evolutionarily precede tracheophytes, are plants that lack true vascular tissues by which to circulate liquids. These plants include mosses, hornworts and liverworts. Tracheophytes, which comprise about 93 percent of all land plants, all possess vascular systems that permit the internal circulation of liquids and nutrients.

4 0
2 years ago
Read 2 more answers
2 Explain why fossil fuels contain large amounts of carbon compounds.
Korvikt [17]

Fossil fuels release carbon dioxide gas when they burn which adds to the greenhouse effect and increases global warming. Of the three fossil fuels, for a given amount of energy released, coal produces the most carbon dioxide and natural gas produces the least.

Did this help?

4 0
2 years ago
WHERE DID MOST OF THE EARTHS ATOMS COME FROM
BlackZzzverrR [31]
These hydrogen atoms can come together in nuclear processes called fusion, which is the process that powers the sun, and through fusion, heavier atoms such as carbon and nitrogen are produced. These in turn undergo fusion to make even heavier atoms, and it is such processes that created all the atoms in the earth.
6 0
3 years ago
Read 2 more answers
At which trophic level are eagles that consume fish that eat algae?
Ludmilka [50]
B. Secondary consumers
6 0
3 years ago
Neurogenesis in the adult hippocampus is stimulated by
ddd [48]
Hippocampal neurogenesis<span> is impacted by environmental factors such as age, excercise, stress and anti-depressant use.</span>
8 0
3 years ago
Other questions:
  • Which specialist would treat a cough in a child?
    10·1 answer
  • Why do scientists use binomial nomenclature instead of common names? Common names are physically accurate descriptions of organi
    6·2 answers
  • Describe two ways about the reasons why we learn about how the heart works in our body
    5·1 answer
  • Pls help asap
    13·1 answer
  • What strategies should the radiologic technologist adopt to maintain good communication while approaching a child for radiograph
    8·2 answers
  • Only 3% of the Earth's water is fresh and two thirds of that is polluted.<br> True or false ?
    14·2 answers
  • Why are spores important to plants like mosses and ferns? <br> Please help.
    13·1 answer
  • What is political machine
    6·1 answer
  • Which of the following is made by male plant cells and is important for the reproduction of flowering plants?
    6·1 answer
  • Why does protease digest protein but not fat?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!