PSYB65H3 Chapter Notes - Chapter 2&3: Alister Hardy, Bipedalism, Neoteny

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21 Jul 2014
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Chapter 2: origins of the human brain and behaviour: cladogram: a graph that shows the relative time of origin of various closely related groups. Hominids were taller, and there was less difference in height between males and females. Similar genes, called homeobox genes, dictate body segmentation in both fruit flies and humans. Thus, segmentation of the human nervous system into the spinal cord, brainstem, and forebrain is produced by genes first discovered in fruit flies. The differences in the structure of the eye and the nervous system in different animal species are the products of slight alterations, called mutations, in genes such as. The symptoms include rigidity that impedes voluntary movement, balance problems, and tremors of the head, hands, and limbs. Parkinson"s dis-ease is unknown, however, and there is no cure: quasi- evolutionary sequence, a hypothetical sequence of animals that represent consecutive stages in evolutionary history. Genes are segments of dna that specify what proteins a cell should make.

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