It's humans are at top of the evolutionary ladder because they have largest brains.
Answer:
These changes probably would have taken place because of antigenic shift or to a smaller extent because of antigenic drift. The antigenic shift takes place when the segments of the influenza viral genome recombine in various ways, and this leads to major modifications to the proteins present on the surface.
The individuals generally do not possess immunological memory to this novel strain of the virus, thus, the disease that they encounter can be more extreme in comparison to the infection with strains to which they possess certain immunological memory. The antigenic shift can result in influenza pandemics.
One possible form of gene that codes for a particular trait is known as A Allele
Answer:
Cell membrane and Cytoskeleton
Explanation:
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In science, it mean 'Million Years Ago'
It could also be used in astrology and biology