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Whitepunk [10]
2 years ago
11

1. Is genetic modification a helpful application of technology that makes plants resistant to pests and disease while improving

nutritional value?
2. Is genetic modification an unnatural tinkering with our food supply that lacks sufficient regulation and oversight?
Biology
1 answer:
Basile [38]2 years ago
8 0

Answer:

Yes genetic modifications is a helpful application of technology that makes plants resistant to pests and disease while improving nutritional value

Explanation:

plz give me brainiest

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3. Suppose you are viewing a sample from a PURE culture and observe both red and purple cocci. What are the possible problems th
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Answer:

The culture might not be stained properly or the culture might be too old.

Explanation:

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Therefore if a pure culture contains have both red and purple cocci that it can be concluded that the gram stating was not done properly like too much destaining was done or too much safranin was used or maybe the culture is too old so that cell wall of some bacteria degrades.

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A frameshift mutation that occurs very early in a protein sequence would have what effect on the protein's structure? see sectio
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In colorectal cancer, some tumor suppressor genes are inactive. This is an important factor resulting in uncontrolled cell divis
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Answer/Explanation:

(1) a mutation in the coding region, resulting in an inactive protein

To check to see if there is a mutation, you could extract the DNA from the cancer cells and then perform PCR to amplify the gene of interest. You could then perform sanger sequencing and compare the sequence to the normal gene to see if a mutation is present. To test the effect of the mutation, you would want to see if an active protein has been formed.

To see if a normal sized protein has been formed, you could perform a western blot, comparing the protein band to the WT protein band. If the protein is absent or much smaller, it is likely not a functional protein.

(2) epigenetic silencing at the promoter of the gene, resulting in reduced transcription.

To check for changes in the epigenetic landscape of the promoter, you could perform chromatin immunoprecipitation by extracting the chromatin from the tumour cells and using antibodies for different chromatin marks to see what has changed between the normal cells and the tumor cells. E.g. H3K9me3, H3K27me3. You would perform a pull down with the antibody of interest and then PCR for your promoter to specifically look at changes at that gene compared to normal cells. To test DNA methylation, you could perform bisulfite sequencing.

To see how transcription is affected, you could extract RNA from the tumor and normal cells, and compare the levels of RNA between the two samples by qRT-PCR

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