Idk the options but it could be genetic variation
Its Gene recombination during sexual reproduction
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Gel electrophoresis is the movement of charged particles in a fluid or gel under the influence of an electric field. Results of this technique can be interpreted to find out if someone carries a certain gene or not.
Carrier proteins are the proteins in active transport
Answer:
Proteins have four levels of organization. Primary structure refers to the linear sequence of the amino acids connected by the peptide bonds. The secondary structure consists of local packing of polypeptide chain into α-helices and β-sheets due to hydrogen bonds between peptide bond – central carbon backbone.
Explanation: