I believe it would be mesentery
Your DNA is comprised of chromosomes which is comprised of genes. Your genes determine which inherited traits you receive from your parents. When you parents "make you" they each donate 16 chromosomes that contain many genes. These chromosomes make up your DNA, which effects your inherited traits such as, eye color, and hair color.
Hope this helps!
Answer:
Ptolemy included epicycles in his orbits.
Explanation:
Ptolomy's model of the solar system was geocentric, where the sun, moon, planets, and stars all orbit the earth in perfectly circular orbits. The problem with perfectly circular orbit around the Earth is that they do not explain the occasional backward motion, or retrograde motion, of the planets.
The Greeks insisted that the motion of the planets be perfectly circular. Ptolemy modeled the planets making small circles around a point that orbited the Earth. These smaller circles were called epicycles, and they allowed the planets to move backward relative to the background stars.
I believe the answer you are seeking is feedback loop