Answer:The chromosomes of a cell are in the cell nucleus. They carry the genetic information. Chromosomes are made up of DNA and protein combined as chromatin. Each chromosome contains many genes. ... When they duplicate, chromosomes look like the letter "X".
Explanation:
Answer:
true
Explanation:
Coal is a non-renewable energy source because it takes millions of years to form.
Answer:
nelly will be more scared becacause she has just woke up
Explanation:
Plants consume carbon dioxide—a significant greenhouse gas—in the process of photosynthesis. The reduction of carbon dioxide in the atmosphere has an indirect cooling effect.
Answer:
retroviruses
segmented viruses
Explanation:
A retrovirus is a type of RNA virus that inserts a copy of its genome into the DNA of a host cell that it invades resulting in changing the original genome of that cell. There are about three examples of retroviruses, they are
* HIV
* Human T-lymphotropic virus type 1 (HTLV-1)
* Human T-lymphotropic virus type 2 (HTLV-II)
It should be understood that there is a difference between virus and retrovirus. This is that a retrovirus inserts its genome into the host's genome unlike the virus.
Segmented viruses are viruses that package all of their genome segments into a single particle.
In this case, these viruses have high rate rate of genetic mutation and adaptation.
