Identical Twins Separated at Birth

What motivated Dr. Nancy Segal to pursue twin research?

• She is a fraternal twin. 
  

• She is an identical twin.

• She studied psychology in high school.

• She has no personal connection to twins.

What type of twins does Dr. Segal emphasize as a control group in her research?

Identical twins originate from how many fertilized eggs?

According to the video, what percentage of genes do fraternal twins share?

• 25%

• 50%

• 75%

• 100%

What is one of the surprising findings about genetic components mentioned in the video?

• Height has no genetic influence.

• Job satisfaction has a substantial genetic component.

• Political attitudes can be influenced by genetics.

• Genetics has no effect on physical traits.

How do genes influence behavior according to Dr. Segal?

• Genes determine behavior completely.

• Genes work in deterministic ways.

• Genes work probabilistically and require environmental triggers.

• Genes have no influence on behavior.

What is a key feature of identical twins raised apart, as discussed in the video?

• They have different DNA.

• They share the same environment.

• Their similarities are attributed to their common genes.

• They are completely different from each other.

What unusual similarity was mentioned about a pair of twins?

• They have the same favorite color

• They both scatter love notes around their house

• They both work in the same profession.

• They both enjoy the same type of music.

How does Dr. Segal suggest we can change behavioral expressions?

• By altering genes directly

• By altering environments

• By eliminating genetic influences.

• By studying identical twins only.

What does Dr. Segal imply about the relationship between genetics and behavior?

• Genetics is the only factor that determines behavior.

• Genetics and environment work together to shape behavior.

• Environmental factors are irrelevant to genetics.

• Behavior is entirely random and unexplainable.