A reaction to stimulus

Dopamine is a neurotransmitter that causes the brain to feel happy. Certain drugs stop the synapses from removing neurotransmitters.

When Thomas Hunt Morgan crossed his red-eyed F1 generation flies to each other, the F2 generation included both red - and white-eyed flies. Remarkably, all the white-eyed flies were male.

All of the following are basic types of asexual reproduction in lower organisms except: regeneration binary fission budding egg-laying multiple fission reproduction by spores

Use this partial DNA sequence (the original sequence with no mutations) to answer the following questions.

In what functional way, at least at first, does the strangler root system of the Ficus natalensis differ from the root system of a common dandelion?

What must you know to solve Kepler's third law, the law of periods?

What shows the movement of energy (in the form of food) from one organism to another?

What are two enviromental conditions that can cause a seed to become dormant?

Future directions and careers in ethnobiology

Joy and shawn have a good marriage, but they disagree about food. they buy two different loaves of bread each week, one white and one wheat, so that they each have the bread they like best.