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ATS-Science 7


Who is the Father of Evolution? Charles Darwin
What did Charles Darwin discover about the finches on the Galapagos Islands that made them different from most finches and why was it different? That their beaks had adapted according to the food that was available on the islands.
Variation happens as a result of differences in ______. genes
What do you call anatomical features that have similar evolutionary origins and exhibit similar anatomical patterns? (ex:bird wings, human arms, whale flippers, deer forelimbs) Homologous structures
What do you call the formation of new species as a result of evolution? Speciation
Name the 3 stages of Specification. 1) Isolation/Separation 2) Adaptation 3) Division
What is the process by which individuals that are better adapted to their environment survive and reproduce more successfully? Natural selection
Natural Selection is also known as ________ __ ___ _______. Survival of the Fittest
Describe what Selective Breeding is. This is the human practice of breeding animals or plants that have certain desired characteristics
Define Trait. A genetically determined characteristic.
What is "Fossil Record?" It is a historical sequence of life indicated by fossils found in layers of the Earth’s crust.
How does a Fossil Record organize fossils? It organizes fossils by their estimated ages and physical similarities. It also provides evidence about the order in which species have existed throughout history.
What is a Fossil? It is the remains or physical evidence of an organism preserved by a geologic processes.
How is a fossil usually formed? A fossil is usually formed when a dead organism is covered by a layer of sediment.
Name 4 types of fossils. -body fossils -Trace -mold -cast
Define Species. Species is a group of organisms that are closely related and can mate to produce fertile offspring.
What is Evolution? This is the process in which populations gradually change over time. Sometimes new species arise.
Name 5 ways (or evidence) that are used to support evolution.... 1) The fossil record 2) Radioactive Dating 3) Anatomical similarities (skeletal structures) 4) Embryological Evidence 5) DNA (chemical evidence) vi. Distribution of organisms
Define Adaptation. It is a characteristic that improves an individual’s ability to survive and reproduce in a particular environment.
Adaptations can be ________ or __________. physical or behavioral
What is a Physical Adaptation? A characteristic or modification in an animal's body that helps it survive in its habita. (Ex. When frogs have green or brown skin to help them blend in w/ leaves or the forest floor; red coloring to warn predators it may be poisonous
What is a Behavioral Adaptation? When something adapts itself to find food, protect itself or to reproduce. (Ex. A Snowy Egret will stand still in the water with its wings stretched out, because fish are attracted to the shade)
Natural Selection has four parts (now supported by genetics). Name the 4 parts.
Created by: glink