Answer:
Down syndrome is one (I think)
Explanation:
Clinical cytogeneticists analyze human karyotypes to detect gross genetic changes—anomalies involving several megabases or more of DNA. Karyotypes can reveal changes in chromosome number associated with aneuploid conditions, such as trisomy 21 (Down syndrome).
The answer is mutualism. Not only does the bacteria get food, we are helped with digestion! I hope this helps ^^
The force of gravity holds everything together, gravity compressed everything to the center.
Answer: The aorta
Explanation: the main blood supplier to the body branches off into two main coronary blood vessels (also called arteries). These coronary arteries branch off into smaller arteries, which supply oxygen-rich blood to the entire heart muscle.