Increased use of antibiotics since the few that are immune will survive and reproduce and will out grow others that arent.
The failure of homologous chromosomes to separate properly is during meiosis where mutation appear
Answer:
STEM CELLS
They serve as a repair system for the body.
DNA is made up of deoxyribose sugar while mRNa is made up of ribose sugar. DNA has thymine as one of the two pyrimidines while mRNA has uracil as its pyrimidines base. DNA is present in the nucleus while mRNA diffuses into the cytoplasm after synthesis. DNA is double stranded while mRNA is single stranded.
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