Answer: Nucleus
Explanation: The Nucleus is at the center of the atom and consists of protons and neutrons that make up most of the mass of an atom.
The organ in which a fertilized ovum implants and develops into a baby is called the uterus
The answer should be a covalent bond.
Answer: really any doctor
Explanation: karyotype tests are done typically during pregnancies, i’m sure a medical facility could do it.
Answer:
The appearance of an organism is the phenotype!