Answer:
they have lower levels of the neurotransmitter serotonin
Answer:
all species were derived from ancestral group
Answer:
ice /freezing fosilization results when the whole animal is preserved
The correct answers are:
b. Human influenza a virus evolves escape variants, resulting in a distinctive cactus-shaped phylogeny.
All types of Human influenza viruses evolve to escape immunity induced by prior infections and vaccinations.
c. Measles experiences strong selection for escape variants, resulting in a phylogeny similar to a nonpathogenic species.
As a result of measles infection, specific antibody and CD4 and CD8 T cell responses are generated and contribute to virus clearance and protection from reinfection.
Considering the enviormental impacts of an expierment is using ethics