Topoisomerase is the enzyme that can be added to correct the untwisting that is led to strain ahead of the replication fork.
Chemically speaking, enzymes are composed of chains of amino acids, and they are considered to be a type of protein.
Answer:
When a phenotype produced by certain alleles helps organisms survive and reproduce better than their peers, natural selection can increase the frequency of the helpful alleles from one generation to the next – that is, it can cause microevolution.
Explanation:
Yea they actually can and l<span>iving things that are composed of one cell are known as unicellular organisms. Examples of unicellular organisms include amoebas, bacteria and certain fungi. Unicellular organisms are either prokaryotes or eukaryotes.</span>
The DNA is coiled extremely tightly around proteins called histones, like a thread on a spool. When DNA is wrapped around a a group of histones, it is called a nucleosome.
