log y - species, 2) intraspecific allometry where a) traits...

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log y = log b + a log x. This is the equation for a strait line with a being the slope of the line. When a<1 we have negative allometry which means that as x gets bigger, y gets bigger at a smaller rate . When a >1 we have positive allometry which means that as x gets bigger, y gets bigger at a faster rate. When a=1 we have isometry (or isometric growth) which means that there is no change in shape (i.e., the relative sizes of body parts) during growth. See fig. 21.9, pg. 597. We can describe different kinds of allometry: 1) interspecific allometry where traits of individuals of the same age (usually adults) are compared between different
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Unformatted text preview: species, 2) intraspecific allometry where a) traits of individuals of all ages are compared within a species (also called ontogenetic allometry), or b) traits of individuals of the same age are compared within a species (also called static allometry). Some examples: interspecific=the Irish elk example (more below), intraspecific (static)=measurements of body height and arm length in class, intraspecific (ontogenetic)=measurements of body height and arm length with my daughter's day-care measurements included. See figure demonstrating ontogenetic and interspecific allometry of brain and body weight in the same graph....
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This note was uploaded on 11/06/2011 for the course BIO BSC1010 taught by Professor Gwenhauner during the Fall '10 term at Broward College.

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