Perhaps the answer your looking for is, a tumor suppressor gene.
Explanation:
This picture illustrate what type of selection 2 directional
Answer:
Mouth: site where mechanical digestion takes place
Stomach: A mixture of chemical etc...
Esophagus: At this site, muscles are contracted to falicilitate peristalsis
Characteristics of bacteria are:
Explanation:
1. They lack a nucleus
2. They make their own food. ( Some autotrophic bacteria like blue green algae or cyanobacteria)
3. They are prokaryotes.
