Ivan Pavlov discovered the principle of , in which a neutral stimulus acquires the ability to produce a response originally produced by another stimulus.

Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. which punnett square represents the correct way to set up the cross rryy  ´  rryy? 

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air

Human genes only differ by less than percent. a. 1 b. 6 c. 11 d. 16