A researcher is trying to construct a molecular-based phylogeny of the entire animal kingdom. Assuming that none of the followin
g genes is absolutely conserved, which of the following would be the best choice on which to base the phylogeny? A) genes involved in chitin synthesis
B) collagen genes
C) beta-catenin genes
D) genes involved in eye-lens synthesis
E) genes that cause radial body symmetry
Collagen is a hard, insoluble, and fibrous protein that makes up one-third of the protein in the human body
Molecules in collagen are packed together to form long and thin fibrils
These act as supporting structures and anchor cells to each other and also give the skin strength and elasticity
Collagen is the most abundant protein found in bones, tendons and muscle skin
Collagen forms a scaffold to provide strength and structure
Because of these characteristics, genes associated with collagen is the best choice to base the phylogeny, rest all other options are not much diverse and specific to particular group of animal kingdom
with each heartbeat,the heart pumps blood throughout our bodies,carrying oxygen to every cell,after delivering oxygen the blood returns to the heart the heart then sends the blood to the lungs to pick up more oxygen.
An allosteric site is a site on an enzyme other than the active site where a molecule that is not a substrate binds. This changes the shape of the enzyme, making it harder for the substrate to bind and inhibits enzyme activity.
