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The function of a blood clot is to prevent blood loss from damaged blood vessels. In order for a blood clot to form, activated platelets and the damaged ...
· Changes in genotype (genetic evolution via natural selection) have lead to cultural evolution in humans by promoting intelligent behaviour
· L...
Incompleteness of the Fossil Record
▪ Fossilisation is an exceptionally rare occurrence that requires an unusual combination of special condi...
A polymorphism is the occurrence of two or more clearly different phenotypes within the same population of a species - it reflects the effects of more than one allele in the gene pool
...
· Sound travels as pressure waves in the air which push the membrane of the eardrum, causing it to vibrate. The degree of vibration will vary according to the frequen...
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