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Antiobiotics kill bacteria but bacteria can become resistant to antibiotics. This happens through a process called natural selection. Within a group/population of bacteria they will all have small diff...
Mutations in individuals leads to variation in a population of a species. Some individuals have characteristics that makes them better suited to their environm...
Alleles are different forms of a gene. For example, given the gene for eye colour there would be many different colours available. People with brown eyes would have the allele of the eye colour gene co...
First of all, the IMPULSE IS DECTECTED by receptors.SENSORY neurone passes impulse onto RELAY NEURONE in SPINAL CORD.RELAY neurone passes impulse onto MOTOR neuroneMOTOR neurone passes impulse to EFFECTOR...
It is important to remember that the myelin sheath is essential for our nervous system.It forms a layers of fatty material around the axon. This allows INSULATION, which, in turn, allows quicker conductio...
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