When charged particles from the sun strike atoms in Earth's atmosphere, they causeelectrons in the atoms to move to a higher-energy state. When the electrons drop back to a lower energy state, they release a photon: light. This process creates the beautiful aurora, or northern lights
Answer:
Transduction is a process by which DNA is transferred from one bacterium to another by the action of a virus. It is also used to designate the process by which exogenous DNA is introduced into a cell by a viral vector. This is a tool that molecular biologists usually use to introduce a foreign gene in a controlled way into the genome of a recipient cell.
Explanation:
When bacteriophages (viruses that infect bacteria) infect a bacterial cell, their normal mode of reproduction consists in capturing and using the machinery of replication, transcription, and translation of the recipient bacteria cell to produce large numbers of virons, or produce particles. viral, including viral DNA or RNA and protein coat.
So the DNA can be copied to make more of themselves.<span />
Answer:
The positive charge of the histone proteins get reduced due to the process of histone acetylation, thus making the wrapping of DNA around the histones less tightened. The loose connected DNA afterward associates with the transcription factors for the articulation of the genes situated in that area.
Generally, when there is no requirement of gene anymore, the acetyl groups from the histones get withdrawn by the activity of histone deacetylase enzyme (HDAC9) that makes the DNA tightly wrapped and inaccessible again. In case, when less expression of histone deacetylase enzyme occurs, the process of deacetylation fails to take place. This indicates that within an immune cell, at the time of infection, the inflammatory gene, which was made available does not get re-wrapped firmly around the histones.
Answer:
During meiosis, homologous chromosomes may exchange genetic material during a process called "crossing over."
