The smoke from the industrial revolution's factories made it so the trees turned black. The white colored moths couldn't survive anymore because they didn't blend into the trees. One day a genetic mutation happened, and the moth turned dark. The dark moth was able to survive better, and therefore, mated, and produced more dark colored ones.
Answer:
The correct answer is C. Proteins.
Explanation:
Amino acids are the smaller component pieces, called monomers, that are joined together to make the longer strand, or polymer, which is a protein. Amino acids are joined by covalent bonds called peptide bonds to make a polypeptide chain, which eventually creates proteins in our cells. There are 20 different amino acids in our cells that come together in a unique order to create the proteins organisms need.
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Answer:
Allele frequencies change randomly each generation is the example of genetic drift.
Answer:
upper gastrointestinal scan
Explanation:
Upper gastrointestinal series is the radiographic examination of upper gastrointestinal tract. Esophagus, stomach and then duodenum are visible on the X-ray film by the use of the liquid suspension which may be barium or water-soluble contrast.
Fluoroscopy is used during upper GI series. A continuous beam of X-ray rays is passed through body part and is transmitted to the monitor so that body part and the motion of it can be seen in every detail. <u>In upper GI series, the fluoroscopy allows radiologist to see movement of barium through esophagus, stomach, and duodenum as the person drinks.</u>
Answer: 19 electrons
Explanation: In an Element there are an equal number of protons and electrons. The amount of neutrons may vary though.
