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development of offspring from unfertilized eggs.
some animals reproduce sexually or parthenogentically
simple to produce many copies
can reproduce asexually even if isolated
can reproduce rapidly
more prevalent in species that live in stable environments with little selection pressure for genetic diversity
requires 2 individuals
allows for greater genetic variation due to genetic recombination
immunity - defenses present at birth and that function the same way regardless of invade.
The nonspecific defense that uses membrane attack complex (MAC) to create channels in microbial plasma membrane
Interferons are proteins that generally inhibit viral replication inside host cells in response to viral infection.
Destroy or inactivate foreign invaders, clear the infected area from dead cells and other debris and set stage for tissue repair.
Direct transfer of antibodies from one individual to another
Naturally via placenta or breast milk
Artificially when human patient given IgG molecules (for example after exposure to hepatitis)
S hort-lived because memory cells are not produced
fast block to polyspermy
fusion between the egg and sperm depolarizes the eggs so that no more sperm may enter.
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