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LekaFEV [45]
3 years ago
12

Why is it impossible to know the growth phase of cut , broken or shaved hair fragments

Biology
1 answer:
White raven [17]3 years ago
5 0
I think that you canno because it will damage yourhair
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2 years ago
3. If a rock was determined to be around 3.9 billion years old how much Potassium 40 would be left in that rock sample?
son4ous [18]

Answer:

What percent of potassium-40 remains undecayed in a rock that is 3.9 billion years old? The 3.9 billion year old rock has undergone three half-lives (3.9 divided by 1.3 = 3). After 3 half-lives, 12.5% of the potassium-40 remains undecayed.

]

Explanation:

5 0
3 years ago
n cancer cells one allele of the tumor suppressor gene p53 is frequently mutated so that the protein is inactive, not produced,
artcher [175]

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If the cancer cell's DNA is sequenced than the anticipated results will be that the cytosines in or close to the promoter region will get methylated. It has been stated that in the cancer cells one allele of p53 is mutated and the other allele, however, of exhibiting an intact promoter, does not express the protein.  

Thus, it shows that the expression in the other allele gets suppressed by methylation rather than by mutation. Methylation generally takes place in CpG islands in or close to the promoter region and therefore inhibits transcription.  

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3 years ago
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