Q: Norm and Ian were two brothers. Norm was a totally normal individual, while Ian had Down syndrome. Their parents loved them both equally. Which brother had a nondisjunction of chromosome 21?
A: Ian

Q: There is a strange phenomenon going on in Siberia. Biologist noticed that 60 percent of the Siberian Tigers have leucism, and another 40 percent have albinism. They labeled the first group as group A and the latter one as group B. They need to find the reasons for this phenomenon. Eyes not affected by loss of pigmentation is an important characteristic of which group, group A or group B?
A: group A

Q: Hydrologists studied two samples of rain water. Jim studied an acid rain sample from a nearby city, and Dan studied a sample of water from another town. Which hydrologist learned less about the causes of acid rain formation?
A: Dan

Q: After decades of debate, Brunei decided to adopt electrical vehicles and use them extensively, ultimately phasing out gasoline powered vehicles. Their neighbor Nepal decided to continue using gasoline-powered vehicles extensively. Which country experienced more volatile hydrocarbons in the atmosphere?
A:
Nepal