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Likurg_2 [28]
3 years ago
8

Variation occurs when chromosomes are shuffled in _____.

Biology
1 answer:
Illusion [34]3 years ago
8 0

Answer:

fertilization

Explanation:

this often results in genetic variation as well :)

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a scientist kept 500 grams of a radioactive material in a container. after 60 minutes, he observed that 62.5 grams of the radioa
Gnoma [55]
After the 1st half-life 250 g of the radioactive material will be left. 
<span>After the 2nd half-life 125 g of the radioactive material will be left. </span>
<span>After the 3rd half-life 62.5 g of the radioactive material will be left. </span>

<span>Therefore after 60 minutes, 3 half lives would have occurred. </span>

<span>Therefore the half-life = 60 / 3 = 20 minutes when 250 grams of the original material would have remained radioactive. </span>

<span>Therefore the answer is A) About 250 gram of the material decayed in 20 minutes.</span>
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worty [1.4K]

Answer:

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Explanation:

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What is often defined as anything that has mass and occupies space?
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Something thas has mass and occupies space is called matter
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You've discovered a gain-of-function mutant E. coli strain that makes red colonies on plates containing normal minimal medium; w
Komok [63]

Answer:

The correct answers are options

B. "Sequencing reagents, such as dNTPs, ddNTPs, and DNA polymerase".

C. "A computer to blast the base pair sequence of the bacterial genomic insert against the genome sequence of your E. coli strain".

F. "An E. coli genomic library made from the mutant strain".

I. "A sequencing primer that hybridizes adjacent to the insertion site of the bacterial genomic fragment in the library plasmids, and pointing in the 5'-to-3' direction towards the bacterial genomic DNA insert".

Explanation:

Plasmid library transformation approaches are very useful to characterize novel mutant bacterium strains. In order to perform a characterization study of this kind, several reagents and tools are needed, including:

- "Sequencing reagents, such as dNTPs, ddNTPs, and DNA polymerase". One important part of knowing what makes novel mutant bacterium different is to sequencing its DNA.

- "A computer to blast the base pair sequence of the bacterial genomic insert against the genome sequence of your E. coli strain". BLAST is a useful computer tool that compares and aligns DNA sequences, this allows to detect what are the nucleotides that are unique in the novel mutant bacterium.

- "An E. coli genomic library made from the mutant strain". Once DNA has been sequenced, an genomic library must be constructed to ensure that this novel mutant is preserved.

- "A sequencing primer that hybridizes adjacent to the insertion site of the bacterial genomic fragment in the library plasmids, and pointing in the 5'-to-3' direction towards the bacterial genomic DNA insert". Sequencing primers are needed when new genomic libraries are constructed. This short DNA sequences allow DNA polymerase to synthesize the DNA an replicate the genome of interest.

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Which level of economy would be most directly impacted by a weekly farmer's market?
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It should be A, Local
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