Produces white blood cells.
random chance.
Some species can gradually change into a new species.
Food supply
When there is low gene flow
When there is no selective pressure
When there is a bottleneck
allele frequency change Apex :)
Lysozymes
Biodiversity resulting from few ancestors, APEX LEARNING
Allopatric Speciation (geographic isolation) can lead to the formation of a new species because the population is split in two smaller populations by a physical barrier (river, canyon, mountain...).
t cells are killer cells
b cells are antibodies
They can produce fertile offspring.
The vaccine makes the body create memory cells for Apex