Off topic:Is there any risk of having my research scooped after posting my manuscript onto bioRxiv ?

Question

[zengxi.hada]

Dear all,

I want to post my manuscript to bioRxiv before submitting onto formal journals, but I still have several concerns:

1. Can I claim I am the first for the discovery by posting my findings on bioRxiv ?
2. Similarly, is it a feasible way to prevent others from publishing ealier than me on the same topic ?
3. Are there any risks of having my research scooped after posting my manuscript on bioRxiv ?

Thanks and Best regards,

Michael