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Vinvika [58]
3 years ago
10

The possibility of magnifying contaminating sequences present in a nucleic acid pool is a drawback associated with PCRs high lev

el of sensitivity (i.e., potential for exponential amplification).
A. True
B. False
Biology
1 answer:
lukranit [14]3 years ago
6 0

Answer:

True

Explanation:

The Polymerase Chain reaction (PCR) is a technique widely used in molecular biology to identify specific DNA fragments generally in a size range of 100 to 1000 base pairs (bp). PCR sensitivity refers to the potential of the PCR technique to specifically amplify the desired sequence in the sample. PCR is a highly sensitive (and also specific) method with values around 100% if the experimental conditions are proper. However, to reach these values, it is imperative to work in optimal conditions by eliminating contaminant factors in the sample which may alter PCR amplification.

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A balance is best used to measure a sample’s _______. a. volume b. length c. mass d. size
slamgirl [31]

A balance is best used to measure a sample's mass.

Answer: C

Explanation:

Weighing balance refers to a measuring instrument which is used to measure the mass of the sample.

It has two pans. On one pan, the material to be weighed is placed, with adequate known loads on the other one to such an extent that the shaft will be in balance.

The distinction between the zero perusing and the perusing with the dish stacked demonstrates the contrast between burdens in scale divisions.

Such an instant weighing needs the arms be of equivalent length.  

7 0
3 years ago
When a phosphate group is released ATP becomes
Marat540 [252]
This occurs when a molecule of adenosine diphosphate (ADP) uses the energy released during cellular respiration to bond with a thirdphosphate group, becoming amolecule of ATP. So the energy from cellular respiration is stored in the bond between the 2nd and 3rdphosphate group
8 0
3 years ago
2. In Squidward's family, a blue body color (B) is dominant to green (b). Determine the phenotype for each
sveta [45]
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8 0
3 years ago
Why do calculated recombination frequencies between pairs of loci that are located far apart underestimate the true genetic dist
den301095 [7]

Answer:

B. As the distance between loci increases, some multiple crossovers go undetected such that the relationship between recombination frequency and map distance ceases to be linear.  

Explanation:

When calculating recombination frequencies, and hence, map distances, we might notice that these distances are not completely additive. They might vary. <em>For example, let us say that we have three genes, A, B, and C, in that order. </em>We calculated that the <em>distance between A and B equals 5.9</em> MU and that <em>B and C are 19.5 MU apart.</em> According to this, we might say that the <em>total distance between A and C is 25.4 MU (5.9 + 19.5). </em>However, after a<em> two-point calculation between A and C, the value equals 23.7 MU. </em>

The recombination frequency between these two genes located in the extremes and far apart underestimate the actual genetic distances between them because there might occur other crossing-overs that were not detected. This is <em>when calculating the distance between A and C, we probably will not detect the occurrence of a double recombinant between them, and hence, we might sub-estimate the real distance.</em>

The relationship between the actual map distance (number of crossing overs) and the recombination frequency between two loci, is not lineal. The farther apart are the two genes, the worse is the distance estimation.  

8 0
3 years ago
Hand passing sharps is a safe practice is this statement
DochEvi [55]

no its not its not a statment

8 0
4 years ago
Read 2 more answers
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