The crossing of chromosomes will create meiosis
Answer:
If you watch carefully how the amoebas move, you're likely to find legs squirming and wiggling around trying to cover space. So this proves amoebas are alive.
Explanation:
Amoebas are living organisms belonging to the kingdom Protista. They are single-cellular organisms that move by extending and moving pseudopodia, extensions of their cellular membrane.
When currents happen little waves are being pushed toward the shore or away from the shore. When being pushed toward the shore cool air is being blown toward land making the air cooler. for exaple the air near a beach will be cooler at night because of ocean breeze
Answer:
The Person who receives the blood from the healthy person is called a donor.
<span>Cells control cell division in order to maintain normal cell function. If something happens to the control of the cell division, the healthy cells will divide uncontrollably. These new cells are cancer cells. </span>
The mutations in three genes are responsible for development of cancers:
1. Mutation in proto-oncogenes. Proto-oncogenes normally signal cells to grow and differentiate. Proto-oncogenes can become oncogenes due to mutations which result in the uncontrollable division of the cells.
2. Mutation in tumor suppressor genes. In normal cells, tumor suppressor genes suppress genes essential for cell cycle and that way they prevent uncontrollable cell division. However, after a mutation in these genes, suppression is lost and the cell may progress to cancer.
3. Mutation in stability genes. In normal cells, they have no role either in cell death or growth, but they control mutation rate. Mutation in stability genes results in situation where all genes, including proto-oncogenes and tumor suppression genes, are more frequently mutated.
