Answer:
If the petri plates are kept open for the longer duration of time then there are chances of cross contamination.
The contamination can be defined as growth of undesired microbes in the petri dishes or tubes which is no longer useful for the experiment.
The tube if kept open will develop the growth of contaminants in it. It can be cross contamination as well.
To avoid contamination the tubes and dishes should not be kept open for a longer duration of time.
Answer:
A magnifying glass is a lens that produces an enlarged image, typically set in a frame with a handle and used to examine small or finely detailed things such as fingerprints, stamps, and fine print. A compound light microscopes have a combination of lenses that enhances both magnifying powers as well as the resolving power.
Explanation:
Answer: e
Explanation:
I think it is e because if the father is normal than his X is healthy and so all his daughters who will get his X will be healthy as well because the illness is recessive. But the sons are going to take their mother X that is linked with this gene and they wont get their father’s X , which would have kept them normal.
Answer:
3 main enviornmental problems are pollution, climate change, and deforestation
Explanation:
<span>C) Bacterial genes are organized into operons, clusters of coregulated genes, that are regulated such that they are all turned on or off together. </span>
