Snake's evolution

snakes are spread across all continents, with the exception of ...

• Asia

• Antarctica

• South America

where we can see how their eyes detect and transmit light

• in their brains

• in their skin

• opsins proteins

• retina

are there any genes in present-day snakes that are remnants from there ancestors

• yes but they undergone considerable diversification through changes to the their genetic code

• no, all of them evolved

• yes, there are genes that remain the same

The eyes of snakes are one of the most interesting

what is the objective of the project

• reconstructions of how the skull evolved

• investigate the skull evolution from snakes

• create new species of snakes

why scientists have speculated that maybe snake ancestors lived in water?

• because snakes lose their legs

• because snakes have scales

• because their way of moving quickly

the research is needed to

• discover new species

• to clarify the role they have played

• to evaluate their skills nowadays

which of these is an ancestral snake

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