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Sharpen your biology skills with practice questions covering a wide range of topics.
Each day, a new question is randomly selected for the home page. Check back tomorrow for a new challenge, or explore more questions after you answer this one!
Today's question of the day:
Which statement is correct about chromosomes?
All chromosomes are composed of DNA bases. Most chromosomes in eukaryotic cells are linear, while most chromosomes in prokaryotic cells are circular. Humans normally have 23 pairs of chromosomes containing different sets of genes, while other organisms may have different number.