Can I export my funds from blockchain.info with the backup phrase?
If you mean by "backup phrase" the Mnemonic phrase which is 12 word for blockchain so the answer is yes, you can export your funds.

Assume you want to import your mnemonic phrase to electrm

you have to choose that your mnemonic phrase is bip39 seed, not electrum seed. 

Then they will ask about derivation path you leave it 44 (default) for blockchain.