Answer:
c. A chromosomal mutation can change the total number of chromosomes in the cell.
Explanation:
A gene mutation affects a single gene, and replication error is the main cause of gene mutation. A chromosomal mutation affects one part of chromosome or full chromosome. error in meiosis is the main cause of chromosomal mutation. Both mutations are responsible for a change in DNA. A chromosomal mutation leads to the change in total number of chromosomes in the cell.
Answer:
Gene therapy replaces a faulty gene or adds a new gene in an attempt to cure disease or improve your body's ability to fight disease. Gene therapy holds promise for treating a wide range of diseases, such as cancer, cystic fibrosis, heart disease, diabetes, hemophilia and AIDS.
Others pinpoint 1637 as the true origin of Thanksgiving, owing to the fact Massachusetts colony governor John Winthrop declared a day of thanks-giving to celebrate colonial soldiers who had just slaughtered 700 Pequot men, women, and children in what is now Mystic, Connecticut.
Answer:
Genetic variation means that a specific gene has various alleles. ... Genetic variation makes it possible for a species to exhibit various traits related to that specific gene. Having a variety of traits can help species adapt to different environmental conditions over time.
Explanation:
Answer:
b) Glutamate's negatively charged R group mimics a phosphorylated serine residue. The Vmax is reduced because the carboxyl group is smaller and less charged than a phosphate group.
Explanation:
Vmax is the maximum velocity of a reaction. It is achieved when all the binding sites of an enzyme are occupied. Glycogen phosphorylase enzyme has a serine residue on position 14. Serine is important for its activity because serine's phosphorylation activates it. Hence, phosphorylated Glycogen phosphorylase is active.
Serine has a hydroxyl group which acts as a nucleophile leading to its phosphorylation and addition of negative charge. Glutamate is already a negatively charged amino acid so it repels the phosphoryl group. However because of its negative charge it acts like phosphorylated serine, making the enzyme functionally active. But due to lesser negative charge and smaller size as compared to phosphoryl group, it is not able to fully restore the wild type Vmax.
