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anastassius [24]
2 years ago
8

Imagine that you are a scientist hard at work in a cancer research lab. You and many of your colleagues are hoping to discover n

ew powerful drugs that could prevent deaths from cancer.
Your research team has observed that cancer cells have a lower survival rate when exposed to samples of a certain species of fungus. To study this further, your team isolated several chemicals from the fungus, including one known to affect cell metabolism. You hypothesize that it is that chemical that lowers the survival rate of cancer cells.
1. Statement(s) supported by the data
A- Cancer cells treated with the chemical have a lower survival rate than cells that are not treated.
B- .After 5 days of chemical treatment, less than 50% of the cancer cells are alive.
2. Statement(s) NOT supported by the data
A- Cancer cells treated with the chemical have a higher survival rate than cells that are not treated.
B- After 10 days without chemical treatment, more than 90% of the cancer cells are alive.
C- This chemical will be useful for treating colon cancer, but not necessarily for other types of cancers.
D- This chemical will be useful for treating all types of cancers.
Biology
1 answer:
Aleksandr [31]2 years ago
5 0

Answer:

The answers are a) Cancer cells treated with the chemical have a lower survival rate than cells that are not treated and d) This chemical will be useful for treating all types of cancer.

Explanation:

Since the research finds that cancer cells have a lower survival rate when exposed to a particular species of fungus. In addition to this new chemical compound could be implemented as a cancer drug.

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the transfer of genes from donor to recipient in microorganisms, where the recipient strain shows a change in genetic makeup at
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The transfer of genes from donor to recipient in microorganisms, where the recipient strain shows a change in genetic makeup at the end, is referred to as genetic recombination.

<h3>What is genetic recombination?</h3>

Genetic recombination is the formation of genetic combinations in offspring that are not present in the parents.

Recombination is a process by which pieces of DNA are broken and recombined to produce new combinations of alleles. This recombination process creates genetic diversity at the level of genes that reflects differences in the DNA sequences of different organisms.

In eukaryotic cells, which are cells with a nucleus and organelles, recombination typically occurs during the metaphase stage of meiosis.

The aim of genetic recombination is to produce offsprings with combinations of traits that differ from those found in either parent.

Learn more about recombination at: brainly.com/question/12685192

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8 0
11 months ago
You first use PCR to amplify the fragment so that there is sufficient DNA for sequencing. You carry out dideoxy sequencing and t
dsp73

Answer:

The first attached figure below shows the design of an agarose gel with four sequencing reactions. The second figure presents a photo of an agarose gel, so that you can better understand how the bands are represented in this gel.

Explanation:

To view the bands of four sequencing reactions on an agarose gel, you will need to use a melted agarose gel, plastic combs suitable for that reaction and a container suitable for that type of gel. You will place the plastic combs in the container and pour all the gel into the vat and wait for the melted gel to solidify. The plastic combs will form holes in the hardened gel where the DNA samples will be placed.

Once the gel is hardened, you will remove the plastic combs and begin to apply the sequenced DNA.

The sequenced DNA samples will be mixed with a dye, usually bromophenol blue, which will allow you to visualize the bands formed on the gel. You will also apply the dye to a sample without DNA containing only the dye, which serves as a comparison for the size of the bands.

Each sample of DNA will be plated in the column of holes formed by the plastic combs. Then, this container, with the gel, will be placed in a larger container that contains a loading buffer. The larger container will be closed and an electric field will be applied that will force the DNA samples to be moved from one pole to another inside the container, in this case, the samples leave the negative pole for the positive pole.

After a few minutes, it is possible to visualize the DNA displacement and at the end of the procedure it will be possible to visualize the formation of bands as shown in the drawing and in the figure below. The size of these bands can be compared and analyzed.

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