Q: Does "In the 18th century the differences among human groups became a focus of scientific investigation." provide a valid answer to "In what century did differences among human groups become a focus of science?"?
A: yes

Q: Does "These include DNA regions that are not transcribed as well as untranslated regions of the RNA." provide a valid answer to "What often plays only a small part in the structure of a gene?"?
A: no

Q: Does "The present-day State House sits atop this lowered Beacon Hill." provide a valid answer to "What sits on Beacon Hill today?"?
A: yes

Q: Does "This feature is lacking in the descendants of their nearest algal relatives, the Charophycean green algae." provide a valid answer to "What are the nearest algal relatives existing today?"?
A:
yes