Draw a punnett square to show a cross between a chocolate lab that is homozygous dominant for the epistatic gene and a black lab that is heterozygous for the epistatic gene and homozygous for the color gene. describe the genotype and phenotype of the possible offspring.

he is very short, and he can only reach halfway up on the elevator buttons. but on a rainy day, he has his umbrella with him, and he uses it to poke the button at the top.

i think that it is plants

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.