Answer:
sorry i just really need the points
Explanation:
Answer:
One band of light density and one band of heavy density.
Explanation:
According to conservative model of replication, the original strands do not separate from each other during replication. Hence, after replication the old strands are together and the new strands are together.
Here, cells were grown in 14N medium first so 14N was used for DNA replication and all DNA molecules had 14N. When the cells were transferred to 15N medium, only 15N was available for replication process. New DNA molecules would be synthesised using 15N (15N15N) and old DNA molecules have 14N (14N14N). Hence, in density gradient one band will be of light density (14N14N) and one band will be of heavy density (15N15N).
Answer:
to prevent the spreading of germs
Explanation:
Interphase is the period of the cell cycle where the cell is actually growing, developing, and carrying out cellular processes. Essentially, interphase is when the cell is busy being a cell. It grows, synthesizes proteins, replicates its DNA, and so on and so forth.
<span>Mitosis is only the small portion of the cell cycle when it is dividing into two new cells. The rest of the time (interphase), the cell is performing its various functions.</span>
<span>Lamarck proposed that by selective use or disuse of organs, organisms acquired or lost certain traits during their lifetime. Then passed onto offspring-leading to change in species.</span>
