"G"enes, "O"ld
Earth History
#'s Games
Cats & Dogs
Doctors
100
This old-gene by today's name, though not then, was founded April 7th, 1976 with no assets or equipment.
What is Genentech Roche
100
Leading to the first animals, this element began to build up in the atmosphere 2 BYA as a product of photosynthesis
Oxygen
100
Arcade video games for this even, and prime, amount of players.
What is 2
100
This television cartoon series features a a conjoined pair of siblings who share their house with Winslow, a mouse in living inside a wall.
What is CatDog
100
This doctor received their medical degree from Glasgow in 1892; later (and earlier) regenerating as a he to a she (and vice versa) while traveling through time and space.
Who is Dr. Who?
200
This old-gene friar and abbot of St. Thomas' Abbey in Brno, Margraviate of Moravia studied heredity in pea plants.
Who is Gregor Mendel
200
Land plants are about 450 mil. years old, but evolution didn't bring us these colorful seed-bearing parts until about 130 MYA
Flowers
200
You would need to throw a javelin this many miles to reach the sun!
What is 93 million
200
Cats and dogs sometimes describes this atmospheric event
What is Rain
200
The "J" in this two letter graduate doctorate degree.
What is Juris, or Jurisprudence
300
Leonard Nimoy first worked with this old-gene on The Lieutenant.
Who is Gene Roddenberry
300
The event of 65 million years ago that took out the dinosaurs is reckoned as the fifth of these mass die-offs
What are Extinctions, or mass extinctions
300
In Pachisi, a game in dating back centuries, this number is the greatest score a player can earn through the toss of the shell. It's also the translation.
What is 25
300
Both dogs and cats smell with their noses, however, they can also smell using this:
What is their mouths, or the vomeronasal organ.
300
The doctor seen here, who is known for his iconic chuckles in the Simpsons.
Who is Julius Hibbert
400
The old-gene capital of Jeans
What is Genoa
400
One theory estimates that life on Earth began 3.5 billion years ago near these volcanic openings in the seabed
What are alkaline vents
400
This was the target number for the 15th century version of Blackjack, known in some countries today by Snip Snap Snoop or Schnitzel.
What is 31
400
Folds on the skin of ears of all cats, and some dogs too, go by this colloquial term.
What are Henry's Pockets
400
The word Doctor originally came from the latin word docēre, which means to do this.
What is Teach
500
This was used as long as 6000 years ago, thought to have been first discovered in in Huaca Prieta, Peru - where it is still used to this day; Long before it was ever used in jeans.
What is Indigo Dye
500
Around 300 million years ago, almost all of Earth's continents came together to form one supercontinent known as this
What is Pangea
500
In this variation of a classic children's game, the rules from "hide or seek" and "it" are combined and players count to this number. Invert it, and it's the same in both Celsius and Fahrenheit - Brrr!
What is 40
500
Dormaalocyon latouri, is the shared this for cats and dogs. 
What is ancestor
500
She was an American cardiologist, working in Baltimore and Boston, who founded the field of pediatric cardiology. 
Who is Dr. Helen Taussig