Answer:
Option A, They have enzymatic properties that can covalently modify DNA.
Explanation:
Histones have very basic nature and possess no enzymatic properties. However, any modification of DNA is carried out after the end of translation process with the help of enzymes on the N –terminal tails through processes such methylation, acetylation, citrullination, phosphorylation.
There are several Histone-modifying enzymes in the human genome that interact with the non-histone proteins to form functional complexes
Hence, option A is correct
Answer:
A. population density
Explanation:
The population density of an area matters because if the population density is high, then the disease is more transmissible. If the population density is lower, the disease will have a less impact and the disease will be less transmissible. The answer to your question is A. population density.
<h2><em>the DNA that is packaged into chromosomes must be fully copied. Previous to replication, a germ cell contains two copies of each chromosome, a maternal copy, and a paternal copy. ... DNA replication occurs in the same fashion as it does during mitosis.</em></h2>
Answer: C. Ranges and niches are moving farther North
Explanation:
Animals are moving north toward the North Pole to escape the heat. Towards the poles, the temperatures get colder. Because of global warming, the temperature zones move out towards the poles.
They start as single cell orginisms then they evolve from there.
hope that helps
