The Study Of The Changes In Bone Formation - Djds - Genetics

1076 words - 5 pages

Evidence for Evolution Worksheet Name:__________________________Date:_________Per:____
For each question below, explain whether the evidence is comparative anatomy (homologous structures),comparative
anatomy (analogous structures), DNA analysis, or from the fossil record. Then, using complete sentences, explain why it
is evidence of evolution, or that life changes over time.
1. Humans, chimpanzees, whales, and bats all have the same bones in their arms, fins, or wings.
a. What type of evidence is this? ______comparative anatomy (homologous structures)__
b. Why is this evidence of evolution?
This is evidence of evolution because if all these animals have the same bones, they probably all evolved from one
creature that had those bones a very long time ago. Some of its children evolved (or changed) into humans, and
other evolved into whales or bats or chimpanzees.
2. Scientists find fossilized bones of a huge animal that doesn’t exist today.
a. What type of evidence is this?___________________________________
b. Why is this evidence of evolution?
3. The human gene for your muscle protein is different from monkey muscle protein in 4 places and different from
a chicken’s gene in 25 places.
a. What type of evidence is this?___________________________________
b. Why is this evidence of evolution?
4. Honey possums lick nectar from flowers using a long tongue made of soft muscle. Butterflies lick nectar from
flowers using a long tongue made of hard protein.
a. What type of evidence is this?___________________________________
b. Why is this evidence of evolution?
5. Humans, rabbits, and zebras all have an appendix, an extra piece in their digestive system, although in humans
it’s much smaller.
a. What type of evidence is this?
b. Why is this evidence of evolution?
As you flip through the newspaper, you notice that the front page article is about evolution. You are curious, since you
are becoming an expert on evolution, so you read it. These are the first 4 sentences of the article…
There is no way that evolution happened. It is something that scientists made up. There is no proof that evolution
ever happened. How can we know what happened millions of years ago?
After reading the whole article, you feel that it is your duty as a science scholar to write a letter to the editor of this
newspaper to provide facts about evolution to the public. Write your letter in the space below.
1. Begin the letter: Dear Editor,
2. Write 1 paragraph (at least 6 sentences) about how scientists know that evolution happened, or that life has
changed over time. In your paragraph, use, UNDERLINE, and explain the following terms:
- evolution, comparative anatomy, homologous structures, DNA, & fossil
3. At the end, sign your name.
up to 10 points extra credit
Directions: Read each description below and write the mane of the type of evolution that is being described.
Write the word in the appropriate box.
convergent evolutio...

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