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Speciation is the EVOLUTION of a NEW SPECIES from an EXHISTING SPECIES.
If two populations are seperated so the flow of alleles stops (e.g geographic isolation- a physical barrier that p...
Sex linkage is a type of genetic disease, where the gene with the faulty allele is carried on the X chromosome.
Women have 2X chromosomes whilst men only have 1. Conseque...
Arteries and veins both carry blood around the body, and they each have three main layers of tissue (a ring of endothelial tissue at the centre of the blood vessel surrounded by a layer of muscle and e...
Carbohydrates
- 17 kJ of energy per gram
- Disaccharides = highly soluble. Polysaccharides = insoluble
- Less metabolic water produced
- S...
Active immunity is happens due to the contact of lymphocytes with pathoges (or simply their antigens), which triggers the specific immune response and immunological memory is p...
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