Research suggests that the impact of the low activity...

Research suggests that the impact of the low-activity version of the $MAOA$ gene on antisocial behavior depends on _____. A) whether the person's diet was high or low in fats and carbohydrates B) whether the person was maltreated during childhood C) whether the person lived alone or with others D) whether the person lived in a large or small town

Transcript

00:01 There's this question pretty quickly here.

00:02 Remember that we're doing, this is about an experiment in which we looked at two different genotypes men with high and low levels of a neurotransmitter.

00:11 And then we looked at their antisocial behavior and levels of probable or anticipated childhood abuse and how those are all connected.

00:22 So the first question asks whether or not variation in antisocial behavior is related to the genotype.

00:30 The men.

00:30 And so for both of the groups, both we saw that there was variation in antisocial behavior due to genotype.

00:43 One of the lines sort of rose like this and the other line rose like that.

00:47 And those are the two genotypes.

00:49 And so that's consistent.

00:50 The fact that these two lines are different is consistent with the idea that there is variation related to genotype.

00:58 Now, the caveat that there is that maybe those two genotypes are themselves related to underlying environmental differences, right? so if you happen to get, you know, allele little a, if you're homozygous for a little a, maybe that changes, maybe that's a result in a learning disability or something like that, and that affects your environment.

01:22 So it may not be a direct relationship, but there does seem to be some kind of relationship.

01:26 For b, we're asked whether or not the variation in antisocial behavior, and i'll write a, b here for anti -social behavior, is due to the environment.

01:38 Remember, we had three levels of environment down here related to the likelihood of childhood abuse.

01:45 And you can see that both lines rise.

01:47 And so that, again, suggests anti -social behavior is related to the environment.

01:51 So that's a big yes.

01:55 For c.

01:58 Or being asked whether or not the two genotypes are responding to the environment in a similar way...