Gel electrophoresis separates DNA fragments according to size<span>. Samples containing a mixture of DNA molecules of different sizes are loaded on to the gel. When an electric current is applied DNA moves towards the positive electrode since DNA is negatively charged.</span>
Nucleotides. They are the building blocks of DNA.
B. Gametophytes produce diploid gamers (the gametes are haploid)
C it displays The environment and structure of the game