Alphabet X Riddle

Riddle: A single word which is versatile, it can be a letter, unknown to the problem, a variable, a target, a love, an intercept, and a type of chromosome. What am I?

Answer: X.

Source: https://www.riddles.com/index.php/2893

A single word which is versatile, it can be a letter, unknown to the problem, a variable, a target, a love, an intercept, and a type of chromosome. What am I? — Alphabet X Riddle by Laure96 v1.

Riddle: A single word which is versatile, it can be a letter, unknown to the problem, a variable, a target, a love, an intercept, and a type of chromosome. What am I? Answer: X. — by Laure96 v2.