Plants are divided into small, sac like structures known as alveoli so that the capillaries can absorb the oxygen.
Lysosomes,
Lysosomes are organelles found in some eukaryotic cells (mostly animal cells) that are responsible for degrading (breaking down) the cell's waste products.
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I think B because This began a scientific collaboration which helped establish "genetics" at Cambridge
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Here, a single mutation has resulted in a new protein with a new and ... how successive mutations turned a pair of protoHox genes in the simple ... The same thing can happen in fruit flies, and likely in many other groups too.
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