Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 46.1, Problem 5R
Summary Introduction
To review:
Human brain size is much above the regression line of ‘brain size as a function of body size’ than other mammals. The reasons why this observation is an underestimation of the cortical capacity of humans compared to other mammals.
Introduction:
There is a correlation between the size of the body and the size of the brain in vertebrates. As the body size increases, the brain size also increases. However, humans lie much above this regression line meaning that they violate this trend.
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Life: The Science of Biology
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- In the past, aspiring London taxicab drivers underwent a rigorous education that required them to learn the location of about 25,000 streets in the city. The average posterior hippocampus of London cabbies, as revealed by magnetic resonance imaging, was larger than that in a comparable group of London bus operators, who follow a fixed route and so do not have to learn a detailed map of the city (Maguire et al. 2000). In addition, the more years of taxi driving, the larger the posterior hippocampus (Maguire et al. 2006). What does this research tell us about the interplay of the environment and genetics in the development of adaptive navigational skills in human beings? Please don't write from any online source.arrow_forwardWhat are the similarities and differences between shark and sheep brains? What makes them distinct?arrow_forwardDescribe the evolutionary advantages and disadvantages of a larger brain, and direct outcomes of having a larger brain.arrow_forward
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