chromosome
Write Y chromosome (noun) as two words; hyphenate the term when used as a modifier:
The Y chromosome is passed from father to son
a common Y-chromosome ancestor
Genetic mutations are written thus:
M168
M9
Write Y chromosome (noun) as two words; hyphenate the term when used as a modifier:
The Y chromosome is passed from father to son
a common Y-chromosome ancestor
Genetic mutations are written thus:
M168
M9