Some genes only need to be expressed or produced when needed. For example, fibrinogen is a protein that needs to be produced when a person needs to clot. A signal protein 'signals' or tells the DNA to start producing that particular protein. Imagine if the protein was produced all of the time at the same quantities...a person would be prone to strokes and other sicknesses that are caused by blocking the flow of blood to tissue.
Answer:
Explanation:
a change or the process of change by which an organism or species becomes better suited to its environment.
Answer:
Primary producers
Explanation:
In any food web, energy is lost each time one organism eats another. Because of this, there have to be many more plants than there are plant-eaters. There are more autotrophs than heterotrophs, and more plant-eaters than meat-eaters.
this is just nonsense
The answer is C. It's kind of like how humans speak in different languages. So do birds. They may make different noises but they are all still birds.
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