Directional growth of a plant in response to light is known as

Why are current extinctions of concern to enviromentalists?

Explain how the parts of the peripheral nervous system work with the central nervous system to produce a response to the stimulus

In cattle a single gene with two alleles determines fur color the fur can be red white or roan roan fur has both red and white hair which of the following statements is true a the allele for roan fur color is dominant over red and white fur color b the allele for red fur color is dominant over white and roan fur color c the roan and white alleles are expressed independently of the other d the red and white alleles are expressed independently of each other