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Minchanka [31]
2 years ago
9

PLEASE ANSWER ASAP Two organisms are found to have similarities in their DNA. What would this tell you

Biology
1 answer:
Otrada [13]2 years ago
5 0

Answer:

They share common ancestors

Explanation:

DNA remain conserve for long time and genetic code dna us major source to know that if irganistims share common ancestors

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When the polymerase chain reaction (PCR) is used to amplify segments of DNA, the sample is first heated, and then cooled, in cyc
baherus [9]

Answer:

At least 17 PCR cycles or 16 PCR cycles

Explanation:

As we know -

In one chain of  heating and cooling  of polymerase chain reaction (PCR), the strands of DNA gets doubled.

The general mathematical representation of this is

{2^n - (2 *  n)}

where "n" is the number of PCR cycles.

It is given that DNA strands  to be produced is 16 times the original quantity of DNA.

So the PCR cycle must be carried out at least 17 times in order to have DNA strand not less  than 16 times the original quantity of DNA

8 0
2 years ago
Who is in the same trophic level as the frog? Select all that apply.
Degger [83]

Answer:

Frog, grasshopper, and rabbit

Explanation:

depending by the region, these may vary, but these are at or near the same trophic level

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2 years ago
Why do we have different time zones
swat32

As Earth rotates, different parts of Earth receive sunlight or darkness, giving us day and night. Since different parts of Earth enter and exit daylight at different times, we need different time zones. In the late 1800s, a group of scientists figured out a way to divide the world into different time zones.

6 0
3 years ago
Read 2 more answers
____________ results from chemicals in car exhaust reacting with the sunlight.
Arte-miy333 [17]

Answer:

smog

Explanation:

Photochemical smog is a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities.

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2 years ago
Cancer is best described as a rapid growth of cells within an enclosed membrane. tumors that cause death. an infectious disease
kykrilka [37]
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