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Rina8888 [55]
3 years ago
5

You start a PCR with 1,000 molecules of DNA, an excess of primers and an excess of nucleotides. The PCR works perfectly and each

round of PCR doubles the amount of DNA present. How many molecules of DNA would be present after 11 rounds of PCR?
Biology
1 answer:
arsen [322]3 years ago
8 0

Answer:

2.048 x 10^6 No. Of Copies

Explanation:

The DNA replication in a PCR works exponentially by using the 2^n where n represents the number of cycles.

For one molecule of DNA = 2^11 = 2048 No. Of Copies

For 1000 Molecules of DNA = 1000 x 2048 = 2.048 x 10^6 No. Of Copies

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Explanation:

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4 0
3 years ago
You observe a plant on your windowsill that is growing at an angle toward the outside. This is an example of a living thing ____
katrin2010 [14]

Answer:

response to stimuli / tropism

Explanation:

The plants and animals always respond to stimuli. It is an innate character of all living things. When a bright light falls on the eye, it closes immediately. This is responding to the stimuli. When someone touches the leaves of touch-me-not plants it closes its leaves due to the external stimuli.

The plants respond to the light. Because it does photosynthesis in the presence of light. Therefore, the leaves and branches of the plants always bend towards the light. This process is called phototropism.

Similarly, the roots of the plants move towards gravity under the ground. This is called geotropism.

Besides phototropism and geotropism, other types of stimuli are there - hydrotropism(response to the water), chemotropism(response to certain chemicals).

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7 0
3 years ago
There are economic concerns surrounding the products that have been genetically engineered for particular traits, including phar
enot [183]

Answer:

other answer is right but they got the letter wrong, its answer B: Birth defects

Explanation:

8 0
3 years ago
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Vesnalui [34]
Helloyo!


Massive Star

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Medium-Sized Star

They usually have a Normal Main Sequence phase (Billions of years). From there they bevome Red Giants and expell their mass in a planetary nebula. From there they shrink and become white dwarfs first, then black dwarfs.


Hope it helps ya




...though astronomy is actually physics btw...
4 0
3 years ago
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Margarita [4]

Answer:

hope it helps

Explanation:

6 0
2 years ago
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