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Assignment 7 What Darwin never knew

Uploaded: 6 years ago
Contributor: miamicanes
Category: Biology
Type: Assignment
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Filename:   Assignment_7_What Darwin never knew.docx (21.34 kB)
Page Count: 1
Credit Cost: 1
Views: 260
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Assignment #7 (20 Points) What Darwin Never Knew Name: Francis Key Directions: Type your answers directly on this sheet in the space provided after each question. Please either highlight your answer or type them in RED font. Upload your assignment as a .doc, .docx or .rtf file when you are finished. Introduction: Per the www.pbs.org website: (http://www.pbs.org/wgbh/nova/evolution/darwin-never-knew.html) Earth teems with a staggering variety of animals, including 9,000 kinds of birds, 28,000 types of fish, and more than 350,000 species of beetles. What explains this explosion of living creatures—1.4 million different species discovered so far, with perhaps another 50 million to go? The source of life's endless forms was a profound mystery until Charles Darwin brought forth his revolutionary idea of natural selection. But Darwin's radical insights raised as many questions as they answered. What actually drives evolution and turns one species into another? To what degree do different animals rely on the same genetic toolkit? And how did we evolve? "What Darwin Never Knew" offers answers to riddles that Darwin couldn't explain. Breakthroughs in a brand-new science—nicknamed "evo devo"—are linking the enigmas of evolution to another of nature's great mysteries, the development of the embryo. NOVA takes viewers on a journey from the Galapagos Islands to the Arctic, and from the explosion of animal forms half a billion years ago to the research labs of today. Scientists are finally beginning to crack nature's biggest secrets at the genetic level. The results are confirming the brilliance of Darwin's insights while revealing clues to life's breathtaking diversity in ways the great naturalist could scarcely have imagined. Directions: Go to the following website: http://www.youtube.com/watch?v=AYBRbCLI4zU View the first 60 minutes of the Video: Type your answers directly on this sheet in the space provided after each question. Please either highlight your answer or type them in RED font. Upload you Assignment as a .doc, .docx or .rtf file when you are finished. Questions 1-18 are worth 1 pt a piece and question 19 is worth 2 pts. How many living species are there currently? 2 million What question could Darwin not answer? How did evolution take place What is believed to be the ancestor of all four limbed animals, including humans? Fish Darwin’s father wanted him to become a: _________Doctor_____________________. What was the name of the ship that Darwin sailed? Beagle How long was the voyage of the ship? 5 yrs What islands proved to be most important in Darwin’s findings? The Gallopades Island Name 2 animals that Darwin studied (other than finches). Penguins and Giant Tortoises Darwin found ____fossils_____________ and studied _____dog breeders____________ to help determine that species change. Natural selection is based on an organism’s struggle to _____survive__________________. According to Darwin, what happens to unfit organisms? Die In what year did Darwin publish “On the Origin of Species”? 1859 What is the hidden mechanism that Darwin never knew about? How evolution really worked Genes are translated into _____proteins_______________. What generates variation in DNA? mutations Why did Darwin receive such criticism during his time? They don’t believe in his theory How much DNA is shared between apes and humans? 96 percent In your own words, what can we attribute the diversity of life on Earth to? 2pts Diversity of life started when GOD made everything you see on Earth. When man started cross breeding animals and trying to figure out where we came from, how the earth was made. Man has learned how to slow down the change of evolution with the use of science and technology. We have learned how to clone animals and speed up and slow down evolution. Also with all the chemicals we use today we have change the diversity of the Earth.

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