Brain
Genetics
Human Roots
Vocabulary
100

At what age does the human brain fully develop?

25

100

How old were the Jim Twins when they reunited?

39

100

On which continent did all modern humans originate?

Africa.

100

Word for twins who share 100% of their DNA.

Identical

200

What chemical makes teen brains seek rewards and take risks?

Dopamine

200

Name ONE medical condition both Jim Twins shared starting at age 18.

Tension headaches (migraines).

200

How many years ago did early humans leave Africa?

60,000 years ago.

200

Word for two surprising events happening together by chance (e.g., dog named Toy).

Coincidence.

300

Which un-matured brain area controls impulses and long-term decisions?

Prefrontal cortex.

300

What exact name did BOTH twins give to their firstborn sons?

James Alan.

300

What scientific tool did the Genographic Project use to track migration routes?

DNA markers.

300

Brain's ability to adapt, rewire, and change based on experience.

Plasticity