The way that tools of molecular biology can be used to compare the DNA of two individuals is the restriction enzyme and gel electrophoresis can be used to match or compare DNA. Meanwhile, PCR can be used to copy DNA if there is no enough DNA to examine
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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.
DNA carries instructions for making the proteins a cell needs.DNA molecules are found in chromosomes.Genes are segments of DNA that contain instructions that code for proteins.
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Not having a job or unable to work
Answer:
Substitution
Explanation:
Substitution is when one letter is switched out for another.
