Well, I don't fully understand your question. I think I know what you're getting at though.
In a system of sexual reproduction, you have genes coming from both an egg and the sperm. Therefore, it'll only contain half the total amount of chromosomes (46 in humans). A sperm will have 23, and the egg will have the other 23. Is that what you meant why the chromosomes are cut out in pairs? If that wasn't your question, please elaborate and I'll return to answer it to the best of my capabilities.
This statement is true.
Some scientist refer to the adrenal medulla as a 'misplaced' sympathetic ganglion because <span>embryologically, they arise from the same tissue. As the name itself says, the adrenal medulla is located within the adrenal gland, and represents its central part. </span>
Plants are NOT heterotrophs. Heterotrophs are organisms that cannot produce their own food; generally these are animals.
Answer:
The dependent variable changes in response to the independent variable.
Explanation:
Think of it like cause (independant) and effect (dependant).
