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Vitek1552 [10]
3 years ago
7

What is the role of a control group in any experiment

Biology
1 answer:
sammy [17]3 years ago
8 0

Answer:

Controlled group does not receive the treatment.  It used as a benchmark to measure how different tested subjects affected the result of the experiment.

For example, the famous experiment of whether plants grow faster with music in one room and without music in the other room. The plant in the no music room is the controlled group.

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True or false: Theoretically, it is possible (but very difficult) for a population to not evolve for a while.
Debora [2.8K]

It is true that it is possible for a population to not evolve for a while.

There is something called the Hardy-Weinberg theorem, which characterizes the distributions of genotype frequencies in populations that are not evolving.

There are 5 Hardy-Weinberg assumptions:

  • no mutation
  • random mating
  • no gene flow
  • infinite population size
  • and no selection (natural nor forced).

You can see that some of these are kinda extreme and really hard to get, but with approximations, we can work.

For example, instead of an "infinite population size" we have enough with a really large population, such that genetic drift is negligible.

Concluding, yes, it is possible (but really difficult) for a population to not evolve for a while (at least, in nature), as long as the 5 assumptions above are met.

If you want to learn more, you can read:

brainly.com/question/19431143

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3 years ago
People suffering from myopia
Dima020 [189]

Yes my ex-girlfriend thankfully died from myopia.

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3 years ago
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If pathogens are present a tree is likely to have
const2013 [10]

Answer:

a. a disease

Explanation:

Pathogens are disease-causing organisms. For example, some bacteria and viruses are pathogens for different species.

Therefore, a tree with pathogens present is likely to have a disease. Different pathogens affect different trees. Examples include Anthracnose , which is caused by a fungus

5 0
3 years ago
A scientist discovers a DNA-based test for one allele of a particular gene. This and only this allele, if homozygous, produces a
Marina86 [1]

Answer:

b. Design a test for identifying heterozygous carriers of the allele.

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3 years ago
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in the image below, what molecule is being released by cellular respiration and used in photosynthesis ​
olasank [31]

Answer:

the answer is B

Explanation:

plants need carbon dioxide to be able to produce anything

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