The main reason is because they are heavy, and because they don't have to chase their food. They're not predators and their shells give them protection like running away gives protection to other herbivores.
Answer:
I guess the answer is a scanning electron microscope
How do genes direct the production of proteins?: MedlinePlus Genetics
y/gene-expression-and-regulation/regulation-of-gene-expression-and-cell-specialization/a/overview-of-eukaryotic-gene-regulation
Overview: Eukaryotic gene regulation (article) | Khan Academy
11 is b but I don’t know the rest sorry
The first option is correct:
When the bacterium reproduces, it passes the gene for human insulin to its offspring. The offspring form a colony of bacteria that contain the gene for human insulin, which can then be used to produce insulin for a person with diabetes
