| 41. | Xanthophyte chloroplasts contain the ?-carotene, and the carotenoid diadinoxanthin.
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| 42. | It was based on molecular phylogenetic analysis of chloroplast and species complex.
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| 43. | The lack of a skeleton allows more light to reach the chloroplasts.
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| 44. | Rather, they bear a striking resemblance to chloroplasts themselves.
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| 45. | This suggests that organisms resembling cyanobacteria were the evolutionary precursors of chloroplasts.
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| 46. | Chloroplast transit peptides exhibit huge variation in length and amino acid sequence.
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| 47. | Bacteria to archaea and eukaryotes via endosymbiotic ancestors of mitochondria and chloroplasts.
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| 48. | DNA in chloroplasts codes for redox proteins such as photosynthetic reaction centers.
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| 49. | Carotenoids soak up those free radicals to protect the all-important chloroplasts.
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| 50. | In plants, chlorophyll is found only in chloroplasts.
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