Evolutionary Relationships
Adaptations, variation, and isolation
Natural Selection
Earth's history
Fossils and Rock Layers
100
The process of how organisms acquire adaptations over time is called this.
What is evolution
100
This is an inherited trait that helps an organism survive.
What is an adaptation?
100
The driving force in evolution is.....
What is Natural selection?
100
The geologic time scale is divided into these two main categories.
What are eras and periods?
100
A method of ordering events relative to each other............
What is relative age dating?
200
All living things have this in their cells, suggesting a common ancestor.
What is DNA?
200
As a populations’ habitat changes over time, a species with a high level of genetic variation would have this.
What is a better chance of survival?
200
Darwin concluded that finches with ____________ beaks are best adapted to eat seeds from very large shells. A. small B. sharp pointy C. large D. small skinny
What is large?
200
What major events divides many of the different geologic times periods/eras?
What are mass extinctions?
200
This is the amount of time it takes for half of the unstable atoms in a sample to decay.
What is a half-life?
300
Models that look like tree branches that show evolutionary history and that all living things have a common ancestor.
What are cladograms?
300
Mata Mata turtles have adapted to their habitat to protect themselves from predators. Which BEST describes this adaptation? A. mimicry B. Camoflage C. parasitism D. mutualism
What is camoflage?
300
The climate of a certain area is cold, and snow is found on the ground most of the year. Equal numbers of two populations of rabbits are introduced into this climate by a group of scientists. One of the populations is brown and the other is white. Over several generations, this will happen.
There will be more white rabbits than brown rabbits
300
Alfred Wegener theorized that the continents were once a great landmass that he named this.
What is Pangaea?
300
This principle states that the layers of sedimentary rocks that are the “lowest” are the earliest to be deposited and the "top" layer would be the most recent.
What is the Law of Superposition?
400
Which is most likely to be related to a human based upon similar anatomical structures? A. flea B. fish C. coyote D. grasshopper
What is C, the coyote?
400
What best explains why the wing of a bat and a fin of a whale are similar? A. a mutation caused them to be similar B. they both share a common ancestor C. a simple coincidence between the two
What is they both share a common ancestor?
400
"Survival of the fittest".
What is the advantage/ability for an individual in a population to survive, and reproduce.
400
The theory of plate tectonics describes this.
How do continents move?
400
Explain how relative dating of fossils differs from absolute dating of fossils.
Relative dating just gives a general order, absolute dating gives an age in years.
500
Over 99% of the DNA in chimpanzees and humans are identical, suggesting this.
What is that the two species share a common ancestor?
500
Explain how the separation of the continents through plate tectonics result in new species.
What is once a population becomes separated they can no longer breed, so over time, the separated populations evolve differently and eventually become different species?
500
Explain how Darwin’s observations of finches in the Galapagos Islands led to his ideas about natural selection.
-Finches on the islands were slightly different from those found on the mainland. --Slight differences in finches from island to island. -Beak shape. --Based on the type of food eaten; finches were adapted for the type of food they ate. -Darwin hypothesized that an ancestral species of finch from the mainland ended up on the Galapagos, and the finches were scattered to different environments. --Then, had to adapt to different conditions, and over many generations evolved into new species.
500
Give 3 pieces of evidence to support Wegener’s theory that today’s continents were once part of an earlier supercontinent.
Same fossils found on different continents, similar geologic features(mountains/rock same age), continents fit like a puzzle
500
Fossils found in the lowest layers of undisturbed rock are not found in upper layers of the same undisturbed rock. Explain what happened to the species found in the lower rock layers and why this might have happened.
The earlier species became extinct. The changing environments on Earth causing loss of habitat, increased competition, new predators, or catastrophes. Lack of genetic variation within a species.
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