<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.
Answer:
Paleontologists may start their investigations by reading articles from the fossil record found in a specific region
Explanation:
Dina may examine the paleontological evidence that includes the study of the fossil record found in her hometown (or closest regions). Moreover, Dina may read research articles on the phylogeography of the species in this area, this information may also help to understand the past climatic conditions
It converts it into electrical energy. Hope that helps :D
Answer:
I think it's D
Explanation:
snow takes longer to disappear good luck <3
Mist nets have been used to capture birds and insects and monitor their populations. Although the number of individuals captured in the nets has been used to estimate population sizes of certain species, this approach can present several problems. On the one hand, to estimate abundances, the use of counting points provides more accurate results, since the data of the capture with nets come from a few points per unit of time. In the case of canopy, the ideal days for this project should be days with the least fog to be able to visualize the species and the impressive vegetation that can be seen from the height, but if what they want is to capture some species for some type of study, they will have to wait for days with more fog.
