3. A new mammal species comes in 3 colors: black, brown and white. We know that there is a single gene that controls coat color and that there are two alleles for that gene. A black version is crossed with
a white version and all the progeny are brown.
a) What is happening here?
b) What are the genotypes of the parents?
c) What genotypic and phenotypic ratios would you predict if two of the F1 brown versions are crossed?

Atp is is our little "pocket" of energy. of course, if you have too little, then it means you have too little energy, and you'll pass out. the way to not have enough, is to have no energy sources (glucose, fats, proteins). you can't have too many atp molecules. cycles like the krebs cycle produce it, but if you have too much of any substrate (or too little for that matter), the cycle stops and atp is no longer made (it stops until substrate levels are such that the process can go on). in any case, this is unlikely since atp is constantly hydrolyzed and remade, even while you're asleep. you won't have too much. if you have zero, you are dead or dying.

Yes yes yes very good