C) A Mutation always has a neutral effect on the function of the organism
The phrenic nerve, which controls the diaphragm
B. a glass eye doesn't contain a lens
There is really no change in cardiac output, there is increased heart rate and a decrease in systolic volume.Although, it is common that after donating blood, vasovagal syncope occurs.
This is basically that the body reacts to de lack of volume, the brain detects an stimulator effect on the vagus nerve, lowers the heart rate and the person feels dizzy or falls, without major consequences.
