There is variation within the population, due to a mutation. The selection pressure is the drug. The microbes that have the advantageous gene which makes them resistant to the drug are selected for, and reproduce passing on the gene, increasing its allele frequency within the population over time. However, the microbes that do not have the advantageous gene, cannot survive and their number decreases within the popullation.
Answer:
The answer is C. white blood cells
Explanation:
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Answer:the cell membrane provides protection for a cell
Explanation: that some molecules can diffuse across the lipid bilayer but others no
Answer:
Tissue
Explanation:
Each cell type has a special feature that enables it to perform a particular function effectively. Thus, cells are said to be specialized to perform different functions. Groups of specialized cells are assembled together to form a tissue. Examples are muscle, skeletal and nervous tissues. Different tissues working together form organs like the heart, kidney and eyes
