祖先 そせん形質 けいしつ共有 きょうゆうでしょう
sosenkeishitsukyōyūdeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 祖先形質共有

1. Probably ancestral trait.; Likely inherited characteristic.

Polite
Presumptive
Conjecture