Natural selection is most likely to happen to have different effects on organisms with which pairs of alleles
a) aa and aa
b) aa and aa
c) aa and aa
d) aa and aa

Based on the data in your tables, did the light-colored moths have a higher or lower survival rate after the industrial revolution?

How many years would it take the atlantic ocean to grow 500 centimeters? show your work.

Imagine a person stepping on a pin and pulling his or her foot away. look at the reflex arc of this scenario below. which statement best describes the image? a)the sensory nerve carries the signal from the effector to the interneuron, and the motor neuron carries the signal to the receptor. b)the motor nerve carries the signal from the receptor to the interneuron, and the sensory neuron carries the signal to the effector. c)the sensory nerve carries the signal from the receptor to the interneuron, and the motor neuron carries the signal to the effector. d)the sensory nerve carries the signal from the receptor to the motor neuron, and the interneuron carries the signal to the effector.