The factors are: The size of the sample, the extraction method, the method of purification and preservation of the DNA.
The quantity and quality of DNA can be greatly improved by performing PCR.
* Purification of nucleic acids is a key step for functional studies in biology. Because of the great diversity of living organisms in nature, purification becomes a real challenge for researchers, especially cell lysis.
The evolution of lysis methods has made it possible to improve efficiency, speed and simplicity. But, this lysis step remains a crucial step for the efficiency and the quality of the purification.
D) male
Most mammals use the X and Y system to determine sex.
Males have 1 X chromosome and 1 Y chromosome while females have 2 X chromosomes.
The question states that there are 2 different sex chromosomes, so this rabbit must be male.
The right answer for the question that is being asked and shown above is that: "The <span>variation within the fish population help individuals survive their encounter with the dolphins is that dolphins will tend to be with them and will be served as their own food."</span>
Outer core is the answer - Appex
