Download What Darwin Never Knew Video Questions

What Darwin Never Knew Video Questions
Part 1: (Darwin’s Work)
*Charles Darwin first published his famous works about evolution - what some call the best idea anyone
has ever had - 150 years ago!
1. Darwin went to school to study both _________ and then _________
2. What was the most important stop on the trip?
3. What was interesting about the tortoises Darwin described?
4. The birds he collected on the islands were actually 13 different species of –
5. Darwin then realized that somehow and for some reason species –
6. What connection between species did Darwin make from studying embryos?
7. Darwin’s conclusions about the how creatures change were found by studying what?
8. The pattern that Darwin saw was that the creatures that survived were those that –
9. Why were there so many different beak shapes in the finches Darwin collected?
10. What was the name of Darwin’s masterwork and when was it published?
11. What happened to the desert mice that lived on the white and dark rocks that Darwin would have
predicted?
12. What is a vital quality of DNA?
13. Mutations are important because they cause –
14. To understand how evolution works all you need to do is –
Part 2: (Finding Evidence of Evolution)
*Remember from our Stickleback Fish Lab that "switches" are pieces of DNA that turn the gene on or off.
1. Scientists have learned that when it comes to genes –
2. This was a revelation. The same genes were responsible for the beaks in all types of finch. Any
differences were in _____ and _____
3. The ____ genes are what throw the switches, which tell the ____ genes what to do and when.
4. If Darwin was right, somewhere out there, there had to be a transitional form, a fossil that was
part ____, but had the beginning of ____,
5. Tiktaalik is a perfect ______ form. Much of its body is that of a fish. It's covered in scales. But it also
had something very un-fishlike, an arm-like fin, or, perhaps, a fin-like arm. Tiktaalik had the bone
structure that is seen in the arms and legs of every four-limbed animal: one big bone at the top;
two bones underneath, leading to a cluster of bones in the wrist and ankle.
6. ____ genes have been found in all complex animals, from the velvet worm that dates back some 600
million years, to the modern human. And in all that time, the letters of their D.N.A. have remained
virtually unchanged.
7. In all four-limbed animals the exact same _____ create the long, upper arm bone.
Part 3: (Connection with Chimps; Brain Evolution)
1. Humans and chimps have about ______ percent identical DNA.
2. What do you think is the most important function of the human thumb?
3. Stedman's discoveries showed that there was a genetic glitch with the human gene that controlled
the muscle to 4. Why do scientists believe this mutation has occurred in humans?
5. In total, Dr. Walch has found _____ different mutations responsible for microcephaly.
6. When compared with the gene in chimps, Dr. Walch found huge differences. There had been a
large series of _______.
7. When Pollard looked at that DNA associated with the cortex of the brain in chimps and compared
it to the same DNA in a chicken, it was different in _______ letters. But in humans it was different by
_______ letters.
8. Basically, by making a small change, just a couple of DNA letters, it could have a _______ effect.
9. What did you find the most interesting in this segment?