Answer:
Oncogenes result from a mutation in proto-oncogenes.
Explanation:
- Protooncogenes control the growth and division of cells.
- The proteins encoded by proto-oncogenes include growth factors, growth factor receptors, transcription factors and signal transducers.
- They contribute to the transformation process by driving cell proliferation or reducing sensitivity to cell death.
- Several types of genetic and epigenetic changes convert these proto-oncogenes to oncogenes.
- Oncogenes arise due to the changes that increases the expression of proto-oncogenes .
- Oncogenes are one of the causes of cancers.
A proto-oncogenes can turn into oncogene by following ways:
- A point mutation such as deletion, insertion and substitution in the proto-oncogene can lead to formation of oncogenes.
- Chromosomal translocation may result in activation of proto-oncogene as seen in Burkitt's lymphoma.
- Insertion of a mobile genetic material such as retrovirus changes the gene expression, but leaves their coding sequence intact.
- Activation of proto-oncogene can also occur from reduplication and amplification of DNA sequence.
The cerebrum controls language,body senses and memory
Answer:
1.to create multiple cells 2. gametes
Explanation:
i have plato and i have done this
<span>Despite the teachings of Christian science against taking medications, the one that the members of the religion will be willing to take is that of immunizations for the purpose of civil law, due to the tenet that followers must abide by the societal laws in place.</span>
Metabolism means <span> biochemical processes that occur within a living organism
and consist of anabolism which means build up </span>substance and catabolism which means breakdown substance
