Twin studies Flashcards
(7 cards)
1
Q
what are identical twins called?
A
monozygotic
2
Q
what are non identical twins called?
A
dizygotic
3
Q
what does monozygotic mean?
A
they are 100% genetically identical as they both developed from the same fertilised egg
4
Q
how does twin studies link to criminality?
A
if criminality is genetic, if one twin is a criminal, if they are identical the other ought to be a criminal too
5
Q
who studied twin in Denmark?
A
Christiansen
6
Q
how many pairs of twins did Christiansen study?
A
3,586
7
Q
what did Christiansen find?
A
35% concordance rate between male MZ twins
among male DZ twins there was only a 13% chance
he also found a 21% concordance rate between female MZ twins
among female DZ twins only 8% chance
