The First ***
Between 1.8 billion and 800 million years ago, the fossil record looks fairly dull – so much so that the period is called the 'Boring Billion'. But behind the scenes plenty was happening. For one thing *** may have evolved for the first time. It's not clear why, or when, some organisms stopped simply dividing in two and started the messy business of ***. But it was definitely going on 1.2 billion years ago: there are fossils of red algae from that time that were clearly forming specialised *** cells such as spores.
Between 1.8 billion and 800 million years ago, the fossil record looks fairly dull – so much so that the period is called the 'Boring Billion'. But behind the scenes plenty was happening. For one thing *** may have evolved for the first time. It's not clear why, or when, some organisms stopped simply dividing in two and started the messy business of ***. But it was definitely going on 1.2 billion years ago: there are fossils of red algae from that time that were clearly forming specialised *** cells such as spores.
The First Sex
Between 1.8 billion and 800 million years ago, the fossil record looks fairly dull – so much so that the period is called the 'Boring Billion'. But behind the scenes plenty was happening. For one thing sex may have evolved for the first time. It's not clear why, or when, some organisms stopped simply dividing in two and started the messy business of sex. But it was definitely going on 1.2 billion years ago: there are fossils of red algae from that time that were clearly forming specialised sex cells such as spores.
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