how do species evolve

Discovery Science: Earth – Evolutionary Factors – the Evolution Of New Species

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Earth Science: Evolutionary Factors – the Evolution Of New Species New species evolve when groups of individual organisms of a species are isolated from each other due to barriers that prevent sexual reproduction. There are two types of speciation due to isolation: allopatric and sympatric speciation. Allopatric speciation happens when a new species evolves due … Read more

Discovery Science: Earth – Evolution – Genetic information: DNA

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Earth Science: Biology – Evolution – Genetic information: DNA Genetic information is stored and passed on as deoxyribonucleic acid (DNA). The cells of all living organisms contain DNA, as do many viruses. In eukaryotic cells, the chromosomes of the nucleus are made up of DNA. It is also found outside the nucleus in chloroplasts and … Read more