One hypothesis that has been proposed regarding the origin of life suggests that life evolved fromanʺRNA worldʺto today’sʺDNA wo
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Answer:
The correct answers are: Dilution factor = 250 and concentration of DNA in undiluted sample = 2.5 μg/μl.
Explanation:
- Volume of DNA taken = 2 μl.
- Volume of added water = 498 μl.
- Total volume of the sample = 2 μl + 498 μl = 500 μl.
- Dilution factor =
- A₂₆₀ of the given sample is = 0.2.
- We know that 50 μg/ml concentration of pure double stranded DNA gives an absorbance, A₂₆₀ = 1.
- Again, Concentration of DNA(µg/ml) =
µg/ml.
- =
μg/ml.
- In order to convert it into μg/μl, we have to divide the above value by 1000, hence we get,
μg/μl.
Answer:
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Explanation:
19) I think the cell is eukaryotic because of it's shape
20) Prophase (added an image with more information)
21) There are 12 chromatids and 6 chromosomes present (chromatids are 1 of the of two identical halves of a replicated chromosome)
22) I think there will be 3 chromones present in each of the new cells after the cell divides (because it separates equally and half of 6 is 3)
