The fetus' umbilical cord. (Singular)
The twin fetuses' mother. (Plural)
The possessive form of fetus is fetus' or fetus's
The singular possessive form is heart's; the plural possessive form is hearts'.
The possessive form is subsidiary's.
The possessive form of "synopsis" is "synopsis's" or "synopsis'."
No, it is singular, the possessive form of it is its. The plural form of it is they or them, and the possessive form is their.To answer the question directly: there is no such word as ITS'.
The singular possessive is Richard's; the plural possessive is Richards'.
The possessive form is battleship's.
Bicyclist's is the possessive form.
The possessive form is librarian's.
The possessive form of "he" is "his": He did his homework after dinner.
The possessive form is posse's.
The possessive form for "lawyer" is "lawyer's."