Jesus, being fully man, as well as fully God, had a human nature, as we do, that
could sin,
could be tempted, had desires (which is what works on our will in decision making). The difference between Jesus and us in that regard, is that His desires were not towards sin as ours are, but towards obedience to God. As to how this can be so with a human mother, and since this sinful desire is inherited, who knows? Not me. There is an avenue of conception that is different and that is that His Father was not human but is God. Which leaves the possibility that it is through the male that this nature is passed. And God could do that, and He did make Adam, not Eve the federal head of all humanity, and the Bible repeatedly says that it is through one man that sin came. That of course would not leave any woman sinless or without a sin nature, because it takes a man to make a woman and a woman to make a man.
![Er... what? o_O o_O](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
It would just leave the possibility that it passes via the male. How this would be is and always will be speculation at least this side of heaven.
The Bible says Jesus was without sin. Therefore He was without sin. The Bible says He was like us, therefore He was like us. If He had had desires towards sin, my guess is He would have sinned.