plastids secondary endosymbiosis eukaryote relatedness

Having chloroplasts does not always mean two organisms are close relatives

Some complex cells gained chloroplasts by swallowing other complex cells that already had them. This means two groups can both have chloroplasts even if their common ancestor did not. Sharing photosynthesis does not necessarily mean they are close relatives.

Greenland’s ice could raise global sea levels

~7.5 m

If the entire Greenland ice sheet melted, global sea levels would rise by about 7.5 metres. Even under very high rates of warming, eliminating the ice sheet would take at least 1,000 years.

Computing became more male-dominated as it gained status

Before the 1960s, computing was widely regarded as women’s work and was associated with office machinery. As computing became a high-status career, the field became more male-dominated.

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plastids secondary endosymbiosis eukaryote relatedness

Having chloroplasts does not always mean two organisms are close relatives

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