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ss7ja [257]
3 years ago
15

A scientist uses materials in her lab to turn one piece of dna into 100 copies of the same piece what process is the scientist u

sing
Use of restriction enzymes
Polymerase chain reaction
Gel electrophoresis
Karyotyping
Biology
2 answers:
TiliK225 [7]3 years ago
7 0

Ans.

The process, which is used for the <em>in vitro </em>(outside an organism or in lab conditions) amplification of sample DNA molecule is known as PCR or polymerase chain reaction. With the help of PCR, a single piece of DNA can be amplified into thousands of copy within few minutes.

The PCR is divided into three steps, denaturation, primer annealing, and extension. During denaturation, the double stranded DNA gets separated to provide two template strands.

During primer annealing, small primers or oligonucleotides bind to the template DNA to start the process of polymerization. Extension involves elongation of new DNA strands by addition of nucleotides to the annealed primers.

Thus, the correct answer is option). 'polymerase chain reaction.'

jonny [76]3 years ago
4 0

Answer: The correct answer is- Polymerase chain reaction.

Polymerase chain reaction is a technique in molecular biology that is used to produce multiple copies of a piece of DNA molecule through multiple cycles of three stages that are-

1) Denaturation- The two DNA strands are separated  ( so that template DNA are exposed) at higher temperature.

2) Annealing- Primers ( forward and reverse) are attached to the template DNA.

3) Extension- New DNA strand is synthesized using enzyme Taq polymerase that adds dNTPs ( deoxyribonucleoside triphosphate) according to the complementary sequences in the template.        


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How to cultivate yam​
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Explanation:

Yams are produced through slips, which have been generated again from sprouts of mature yams, rather than seeds, as most other crops are. Split a yam in part and place one half in a bowl of cool water to develop sprouts.

4 0
2 years ago
Sarah wants to know which brand of nail polish lasts the longest without chipping.She buys 4 types of nail polish - Essie (which
son4ous [18]

Answer:

Different brands of nail polishes used by Sarah.

Explanation:

While conducting an experiment two different variables are considered namely dependant variable and independent variable. The variable which is continuously changed to see the effects is called as independent variable and the variable which is being tested is called as dependant variable.

In the given scenario, Sarah want to know best brand of nail polishes which lasts longest without chipping. Thus the different brands of nail polish used by her is considered as independent variable.

7 0
3 years ago
Another term(not an animal) that can be used to describe a 2nd level consumer is ...
alexgriva [62]
Secondary consumer

(In detail) A secondary consumer eats the primary consumers while the primary eats the producers. Primary consumers are herbivores while secondary consumers can be omnivores and carnivores.
6 0
3 years ago
While doing field research, two scientists discover
zysi [14]

Angiosperms, dicots

Explanation:

Angiosperms are highly differentiated vascular plants which can produce flowers and bear fruits with seeds in them. These flowering plants undergo reproduction and produces new plants. The reproductive parts like ovules and ovaries, stigma, stamen, pollen are all present in the flowers.

Angiosperms can either be a monocot or dicot. If they contain two embryonic leaves or cotyledons they are referred as dicots. Flowering angiosperms like geranium, magnolias are all dicots.

Geranium is a dicot angiosperms that produces small purple flowers.

Gymnosperms or bryophytes do not bear flowers or fruits. Monocots have only embryonic leaf.

5 0
3 years ago
Read 2 more answers
How does chlorine bond with sodium?
timurjin [86]

Both the sodium and the chlorine atoms need to obtain a stable electron configuration, thus, a complete outer shell of eight electrons.


Sodiums electron design is 2,8,1 and chlorines electron setup is 2,8,7. So all together for the two molecules of the two components to get a total external shell of eight electrons, sodium will give one electron to chlorine, and the chlorine particle will acknowledge the gave electron when responded with each other.

This outcomes in the sodium particle having an electron arrangement of 2,8 so is currently total. The chloride particle currently has an electron configuration of 2,8,8.

Since the molecules have moved toward becoming particles to end up stable, the Na+ and the Cl-particles draw in one another because of their contrary charges, which results in an ionic bond.


This is the reason sodium and chlorine cling to each other when responded.

6 0
3 years ago
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