Final answer:
To determine how well you did at removing protein from your DNA preparation, examine the ratio of DNA to protein. Higher ratios of DNA to protein indicate better DNA samples.
Step-by-step explanation:
When examining the ratio to determine how well you did at removing protein from your DNA preparation, you should look at the ratio of DNA to protein. A higher ratio of DNA to protein indicates a better sample of DNA. On the other hand, a higher ratio of protein to DNA indicates a better sample of protein. For RNA, a good sample would yield a high ratio of RNA to DNA.
For example, if you have a DNA sample with a ratio of 2:1 (DNA to protein), it means the sample contains twice as much DNA as protein. This is considered a good sample of DNA. Conversely, if the ratio is 1:2, it means there is twice as much protein as DNA, indicating a poor sample of DNA.