How many recessive alleles for a trait must an organism inherit in order to show that trait?

What are two ways that oceanographers identify ocean currents?

How many genotypes are possible for the offspring of a homozygous male and heterozygous female.

What are some examples of abiotic factors within an ecosystem? J. Plants, fungi, moss K. Birds, insects, coyotes L. Snakes, lizards, frogs M. Rocks, soil, water

Name the three essential active site residues of chymotrypsin and describe how each is involved in the catalytic mechanism.

Organism that use light energy to build molecules are called

A full moon appears white to us on earth because it A) emits white light B) reflects the light from earth C) reflects the light from the sun D) is in total darkness of space

Why is the human brain not considered to be a living organism

5. The blob operon produces enzymes that convert compound A into compound B. The operon is controlled by a regulatory gene S. Normally these enzymes are synthesized only in the absence of compound B.

Pavlov experiment, in which dogs learned to associate a ringing bell with food, is an example of

Which is the overall purpose of the excretory system? extracting energy from food maintaining homeostasis moving nutrients through the body gathering information