Protons electrons are stored making helpful neurons
Answer:
Once you're done, you should get AA. Aa, Aa. and aa.
Explanation:
Phenotype:
AA, Aa, Aa, and aa.
The trait of the free-hanging earlobes is DOMINANT.
You'll have three dominant traits and one recessive trait.
I'm not sure about the ratio. I'm brain dead at the moment so if i get the answer for the ratio, i'll let you know as soon as possible.
Ventilation maintains a steep concentration gradient, blood at the exchange surface usually has lower O2 and higher CO2 content than the air (of for fish, the water) at the exchange surface. This is what allows for diffusion of O2 into the blood and CO2 out of the blood. Multicellular organisms have a greater number of cells so will have a higher energy demand than single cellular organisms, this demand can only be met by allowing the cells to respire, a ventilation system brings oxygen molecules which are a raw product of respiration into the hemoglobin of the blood to be transported to tissues. As surface area : volume ratio is very low so if there was no ventilation system and the organism instead relied on exchange of materials through the exposed skin it would be very difficult to met the high energy demand as less O2 and CO2 would be able to be exchanged.