Explanation:
The major blood vessels that are connected to the heart include the aorta, the superior vena cava, the inferior vena cava, the pulmonary artery (which takes oxygen-poor blood from the heart to the lungs, where it is oxygenated), the pulmonary veins (which bring oxygen-rich blood from the lungs to the heart) and the coronary arteries (which supply blood to the heart muscle).
A) 12 chromosomes in a gamete
B) 46 chromosomes in prophase 1!
Answer:
German Zoologist discovers Theodor Schwann that animal were made from cell
