Answer:
The first part of the small intestine is called duodenum
Explanation:
The small intestine is a tightly folded tube which connects to the stomach on the top end and to the large intestine on the bottom end.
The small intestine consists of three parts:
- jejunum (absorbs sugars, amino acids, and fatty acids)
- ileum (absorbs remaining nutrients that did not get absorbed by the duodenum or jejunum)
Duodenum is responsible for completing the first phase of digestion. In this section of the intestine, food is mixed with enzymes and bile which help break down food.
Adaptations are physical or behavioral traits that make an organism better suited to its environment. Heritable variation comes from random mutations. Random mutations are the initial cause of new heritable traits. For example, a rabbit can't choose to have a different fur color.
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Gamete,
A Gamete is a cell that fuses with the other sex's Gamete to make a zygote, they are made via Meiosis, not Mitosis and it's practically impossible for them to divide after Meiosis