The answer to this is a group of individuals many species living in an area.
Answer;
DNA replication is semi-conservative.
The meselson-stahl experiment supported the hypothesis that DNA replication is semi-conservative.
Explanation;
The Meselson-Stahl experiment was an experiment by Meselson and Stahl that proved that the semi-conservative model by Watson and Crick was correct.
DNA replication is semi-conservative in the sense that the new helices formed after replication contain, one new DNA strand and one old strand from the parent DNA molecule.
<span>each set of three nitrogen bases representing an amino acid is referred to as a condon.</span>
The answer is D, 15,000 x 0.2= 3000 add that together =18,000
Answer:
Option D, Personal habits, such as hand washing, have greatly reduced contamination from bacteria.
Explanation:
Diseases like typhoid and cholera became pandemic a century ago because people at that time were not aware of the general hygiene and its impact on killing microbes.
Majority of human diseases are caused by either bacteria or virus only when they ingest into the internal body system. The entry of microbes can be restricted by adopting healthy hygiene habits such as washing hands regularly with disinfectants, washing vegetable properly before cooking etc.
Such habits break the chain of contamination and hence prevent the disease from spreading.
Thus, option D is correct
