Cope’s rule:  A proposed generalization that individual body size in animals tends to increase during evolution.

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#Id: 335

#XL - R Botany

Glucagon lowers the cellular level of fructose 2,6 bisphosphate, inhibiting glycolysis and stimulating gluconeogenesis.

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#Id: 5375

#XL - T Zoology

Mark-recapture technique can have drawbacks;

1. Some animals that have been marked may learn to avoid the traps. 
2. Recapture rates will then be low, resulting in an overestimate of population size.

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#Id: 1979

#XL - T Zoology

Ecological density- Total number of individual divided by total useable area.

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#Id: 8112

#XL - Q Biochemistry

The amino group at C-2 bears a fatty acid in amide linkage.

The fatty acid is usually saturated or monounsaturated, with 16, 18, 22, or 24 carbon atoms.

Ceramide is the parent compound for this group.

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#Id: 8991

#XL - T Zoology

Incomplete lineage sorting (hemiplasy)

If you make a phylogenetic tree of how the alleles are related to each other, it does not mirror how the species split apart.