The answer is C.) Sac. More formally known as the amniotic sac. It's also sometimes called the bag of waters.
Because skin falls off, or are you talking bout why don't people stick together?
The right answer is false.
All the physical characteristics of an individual, which are at the basis of genetic characters (sometimes even epigenetic), are transmitted to his offspring.
Classical or monogenic Mendelian inheritance is based on the transmission of a single gene in a dominant, recessive mode, linked to the sex chromosome X (or Y), or more rarely mitochondrial (extranuclear) chromosome.
Answer:
The answer is A. Fertilized ovules