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Evolution Gaiser Life Science Know What do you know about evolution? “I don’t know anything.” is not an acceptable answer. Use complete sentences. Evidence After listening to the PowerPoint lecture, come back here and list evidence to explain why your answer to the above question is or is not a good answer. You may also use other outside sources to help you respond. Choose any vocabulary word except competition and make a drawing that represents the definition of the word you chose. Page # Clarifying ?s Who? species adaptations evolution Evolution Information Charles Darwin was a naturalist (a person who studies nature) who traveled for 5 years on the HMS Beagle (a British ship). He made and recorded thousands of observations of plants and animals. His best known research was done in the Galapagos Islands. - a group of similar organisms that can mate with each other and produce fertile offspring Darwin took note of similarities and differences between mainland and island birds and animals. - characteristics that help organisms survive and reproduce Example: the shapes of birds’ beaks - a gradual change in a species over time in order to adapt to new conditions in the environment natural selection - individuals who better adapt to their environment have a better chance to survive and reproduce FYI - The phrase “Survival of the fittest” was introduced by Herbert Spencer, a contemporary of Charles Darwin. The phrase essentially means the same as “natural selection.” overproduction - when a species produce more offspring than the environment can support Page # Clarifying ?s competition variation selection New species Summary: Evolution Information - food and resources are limited. Species compete with each other to survive. Example: A musk ox's diet consists of plants such as sedges and grasses, while a caribou's is made of berries, grass and sedge. When food is hard to find in the tundra, musk ox and caribou might have some competition trying to get something to eat. (from answers.com) - any difference between individuals of the same species Example: coloring - Species with traits that promote survival live and reproduce. Over time, traits that do not promote survival are not carried to the next generation. When a group separates from a species over several generations, different traits evolve. Example: Grand Canyon Squirrels - The kaibab squirrels and the albert squirrels were separated by the natural barrier (the Grand Canyon) They started out as the same species but, eventually developed into two separate species of squirrels. Page # Clarifying ?s Who? species adaptations evolution Evolution Information Charles Darwin was a naturalist (a person who studies nature) who traveled for 5 years on the HMS Beagle (a British ship). He made and recorded thousands of observations of plants and animals. His best known research was done in the Galapagos Islands. - a group of similar organisms that can mate with each other and produce fertile offspring Darwin took note of similarities and differences between mainland and island birds and animals. - characteristics that help organisms survive and reproduce Example: the shapes of birds’ beaks - a gradual change in a species over time in order to adapt to new conditions in the environment natural selection - individuals who better adapt to their environment have a better chance to survive and reproduce FYI - The phrase “Survival of the fittest” was introduced by Herbert Spencer, a contemporary of Charles Darwin. The phrase essentially means the same as “natural selection.” overproduction - when a species produce more offspring than the environment can support Page # Clarifying ?s Evolution Information competition - food and resources are limited. Species compete with each other to survive. Example: A musk ox's diet consists of plants such as sedges and grasses, while a caribou's is made of berries, grass and sedge. When food is hard to find in the tundra, musk ox and caribou might have some competition trying to get something to eat. (from answers.com) variation - any difference between individuals of the same species Example: coloring - Species with traits that promote survival live and reproduce. Over time, traits that do not promote survival are not carried to the next generation. When a group separates from a species over several generations, different traits evolve. Example: Grand Canyon Squirrels - The kaibab squirrels and the albert squirrels were separated by the natural barrier (the Grand Canyon) They started out as the same species but, eventually developed into two separate species of squirrels. selection New species Summary: Page # This PowerPoint was created by Tim Paterek from Charlene Shea’s lecture notes. All pictures came from Google Image Search. To fall within the Fair Use Guidelines, this PowerPoint must be used within the confines of the classroom and may not be published back onto the Internet unless the pictures are removed.