Answer:
C. The number of differences in a specific DNA sequence of two species is multiplied by a known mutation rate to determine the number of years of evolution that separate the two species.
Explanation:
This is the best explanation of a way that a molecular clock can be used!
In biochemistry, aligand is a substance that forms a complex with a biomolecule to serve abiological purpose. In protein-ligandbinding, the ligand is usually a molecule which produces a signal by binding to a site on a target protein.
Receptor mediated endocytosis is an endocytotic mechanism in which specific molecules are ingested into the cell. The specificity results from a receptor-ligand interaction. Receptors on the plasma membrane of the target tissue will specifically bind to ligands on the outside of the cell. An endocytotic process occurs and the ligand is ingested.
A very well studied example of receptor mediated endocytosis involves the metabolism of cholesterol.
Answer:
with a record of 98% in 1895. The evolutionary importance of the moth was only speculated upon during Darwin's lifetime. ... This selective survival was due to birds which easily caught dark moths on clean trees, and white moths on trees darkened with soot.
