In the human body, when the blood sugar level rises, a hormone known as insulin is released by the pancreas. this hormone speeds up the movement of sugar out of the blood, so the blood sugar level decreases and returns to equilibrium.

this is an example of
gene expression.
a feedback mechanism.
natural selection.
a learned behavior

Which best describes red blood cells? a. they are colorless b. they protect against disease-carrying microorganisms c. they transport oxygen throughout the body d. they aid in blood clotting

Examine the air pressure map. which type of line is shown on the map?

14) whenever diploid populations are in hardy-weinberg equilibrium at a particular locus a) the allele's frequency should not change from one generation to the next, but its representation in homozygous and heterozygous genotypes may change. b) natural selection, gene flow, and genetic drift are acting equally to change an allele's frequency. c) this means that, at this locus, two alleles are present in equal proportions. d) the population itself is not evolving, but individuals within the population may be evolving.