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stiks02 [169]
3 years ago
9

A classmate has asked you to help them determine the concentration of DNA in their solution. Their A260 reading was 1.69. What w

as the concentration of their DNA
Biology
1 answer:
Gnesinka [82]3 years ago
7 0

Answer:

Acid , phenol or protein

Explanation:

The ratio of absorbance at 260 and 280nm is what is usually used to assess the purity which a DNA or RNA posses. A ratio of 1.8 is generally accepted as being pure for a DNA sample and a ratio of 2.0 is generally accepted also as being pure for RNA. when the ratio is significantly lower in each case, it indicates that there is presence of protein, phenol or other contaminants.

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3 0
3 years ago
In which generation gametophyte or sporophyte do the following belong
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4 0
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Which of the following statements is true? 1 point A cell's phenotype is determined by its DNA, and it's genotype is determined
Whitepunk [10]

The Answer is B - A cell's genotype is determined by its DNA, and it's phenotype is determined by its proteins.


Hope this helps!  

6 0
4 years ago
What alternate form of genes do nucleic acids have that allows them to offer variability?
Lina20 [59]
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4 0
3 years ago
1. What limits do common names have?
solniwko [45]

Answer:

Explanation:

Common names are local names that are given to organisms. These names are widely and locally accepted even within scientific bodies in order to avoid the rigors of having to use latin names of organisms.

Some of the limits of using common names are:

1. They can depend on geography: some common names are restricted in their use based on their acceptance by set of people. In some other climes, they might not be accepted. This is one big limitation in using common names.

2. They often use multiple words: within a particular area, an organism can be called different names. This is yet another big limitation of common names.

3. They are can be descriptive or non-descriptive of the organism: some common names are descriptive and they can easily tell us about an organism. Others might not even relate to to the organism at all.

4. They can be in different languages: Most languages have a common name for all organisms. This pose a serious scientific barrier when studying such species.

8 0
4 years ago
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