There may be spoilers from Bleach: Thousand Year Blood War.
In Bleach, we see that Ichigo has the powers of a Shinigami (Soul Reaper), a Hollow, a Quincy, and a Fullbringer, where the first three of these were inherited. Due to his mother, Masaki, being a Quincy, who also absorbed a Hollow, and his father, Isshin (Shinigami) sealing the hollow inside Masaki.
Then why were these inherited by only Ichigo?
It could've stayed with Masaki or would've been transferred to his siblings as well.