Fiddler Crabs and Babies

28 Mar

Allometry is the study of the relative change in proportion of an attribute compared to another one during organismal growth. Basically when a body part grow bigger and another grows smaller over time. Allometric growth can be seen in nonhuman primates. For example the jaw and other facial structures of baboons have a growth rate about four and one-quarter times that of the skull. As the baboon matures, the jaw protrudes further and further until it dominates the facial features. A power function that depicts allometry is F(x) = Kx^P. I had trouble finding examples of positive and negative allometry formulas, if anyone know please share.


2 Responses to “Fiddler Crabs and Babies”

  1. aaliyahmichellesite March 29, 2017 at 12:47 am #

    I thought this was really interesting because I did not know that a baboons jaw grew at such a face rate.

  2. Dr. Fisher April 5, 2017 at 7:37 pm #

    You have the idea more or less correct, you have to be careful. For example, you state that allometry is when “a body part grow bigger and another grows smaller over time.” It’s not that one body part grows smaller; it’s that it grows more slowly! Human heads don’t shrink over time; they just don’t grow as fast as the rest of your body. The point is that the ratio (or fraction) of one body parts size relative to another’s will shrink.

    Can you say more about how this is related to power functions?

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