Yellow-indicates acid production from fermentation of the carbohydrate lower the pH below the neutral range
A- Flatworms are unsegmented and only have one mouth/anus opening. And they are obviously flat
Answer:
Typically in mammals, the gender of an organism is determined by the sex chromosomes. In the case of humans, this happens to be the X and the Y chromosomes. So as you may recall, if you are XX, you are female. If you are XY, you are male.