Answer:
Always keep your microscope covered when not in use. Always carry a microscope with both hands. Grasp the arm with one hand and place the other hand under the base for support.
During the process of replication, the double stranded DNA unwinds and parts itself by the action of enzyme called as Helicase. The unwinding or separation of DNA forms a replication bubble and at the edge of the replication bubble is the replication fork.
DNA replication starts at the point called as origin of replication or ORI at the replication fork. DNA polymerase is the enzyme that plays a key role in DNA replication. DNA continues to replicate until the entire new strand is not formed.
Answer: metaphase
Explanation:
The failure of sister chromatids to separate during meiosis II occurs in metaphase stage. This is called as nondisjunction, this will affect the normal distribution of chromosomal material to the daughter cells. This will result in a problem called aneuploidy. There are abnormal number of chromosome per cell.
Answer:
Convection occurs when particles with a lot of heat energy in a liquid or gas move and take the place of particles with less heat energy. Heat energy is transferred from hot places to cooler places by convection. Liquids and gases expand when they are heated. ... The denser cold liquid or gas falls into the warm areas.
