Adaptations – Variation and Biodiversity Ep 5

In the last article we looked at natural selection, a process which leads to evolution. We saw that if an organism has advantageous alleles, it is better adapted to its environment and is more likely to survive and reproduce. In today's article we will look at the different types of adaptions that organisms can have … Read more

Natural Selection – Variation and Biodiversity Ep 4

Natural selection is one way that evolution occurs. Evolution is the change in allele frequency over time. In this article we will look at the process of natural selection, and a few different types of selection. Note that there can be other mechanisms behind evolution as well, such as the genetic bottleneck effect described here. … Read more

Meiosis – Cell Division Ep 4

Meiosis is a little more complicated than mitosis, and has a different outcome. Meiosis is a method of cell division which only happens in the reproductive organs of organisms which reproduce by sexual reproduction. It produces genetically different gametes with half the number of chromosomes as the parent cell. These gametes (the egg cells and … Read more

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