I’m taking an online course for learning biology on my own. There’s a question in “Information transfer” section that baffles me.
Check the boxes for all of the sequences that will hybridize (base pair) with this strand (rewritten below).
3’ TGTTGA 5’
The options are:
3′ TCAACA 5′
5′ ACAACT 3′
3′ TGTTGA 5′
5′ TGTTGA 3′
I selected only the second one. But the correct answer is the first and second options. How the first option can be a match for the given strand?