Question

Hey, thanks in advance for any help! :)

Twin study between monozygotic (MZ) and dizygotic (DZ) twins:

MZ male= 0.54
MZ female= 0.49
DZ male= 0.31
DZ female= 0.33
DZ opposite-sex= 0.01

Calculate the narrow-sense heritability and shared environment component of variance for
(a) male and
(b) female.
(c) What does the correlation for opposite-sex DZ twins tell you about the genetics of sexual orientation?

Any help welcomed ;)