Not-so-identical twins

Identical twins have long been touted as an incredible resource for genetics because they’re “genetically identical”. But new research suggests that might not be quite true. Identical twins are called monozygotic because they come from a single zygote that has formed from a single sperm and egg. As the cells multiply, they can split into … Continue reading Not-so-identical twins

Yes, the megalodon was really big

The megalodon (Otodus megalodon) has a long-standing reputation as one of the largest sharks to have roamed the oceans. Now, US researchers have confirmed its sheer enormity, suggesting it grew up to 15 metres in length. That’s on a par with the extant current record holder, the whale shark (Rhincodon typus). “For animals and especially … Continue reading Yes, the megalodon was really big