Term
6.1
In 1858, Charles Darwin and Alfred Russell proposed how ______ occurs.
a. variation
b. adaptation
c. evolution
d. chance |
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Definition
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Term
6.1
Members of a species can mate with each other and produce _______
a. gene pools
b. fertile offspring
c. variations
d. adaptations |
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Definition
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Term
6.1
Today, producers/farmers use ______ to breed animals in captivity.
a. artificial selection
b. natural selection
c. chance
d. none of these |
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Definition
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Term
6.1
Darwin made a number of important observations on the ______ islands.
a. Hawaiian
b. Virgin
c. Galapagos
d. none of these |
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Definition
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Term
6.1
To understand how evolution might occur, Darwin studied the offspring of _____ animals.
a. wild
b. domesticated (tamed) |
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Term
6.1
The different shapes of bird beaks are examples of _______.
a. fossils
b. adaptations
c. evolution
d. naturalism |
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Definition
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Term
6.1
Only the organisms with a desired characteristic are bred in ________.
a. artificial selection
b. natural selection
c. England
d. Scotland |
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Definition
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Term
6.1
The preserved remains of an organism that lived long ago is a(n) _______.
a. adaptation
b. Galapagos
c. fossil
d. Beagle |
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Definition
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Term
6.1
Today, scientists know that organisms are much _____ diverse than Darwin imagined.
a. less
b. more |
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Definition
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Term
6.1
Darwin proposed that evolution occurs by means of _________.
a. artificial selection
b. natural selection
c. evolution
d. none of these |
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Definition
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Term
6.1
Without variation, all the members of a species would have the same traits.
a. variation
b. adaptation
c. evolution
d. chance |
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Definition
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Term
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Definition
| Something that can't be proven but is considered to be true |
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Term
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Definition
| Something that can be proven over and over again |
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Term
6.2
The millions of fossils that scientists have collected are called _____
a. architecture
b. data base
c. record
d. library |
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Definition
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Term
6.2
Scientists have found a great deal of evidence that supports Darwin's theory of ______
a. atomic structure
b. creation
c. evolution
d. relativity |
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Definition
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Term
6.2
Scientists infer evolutionary relationships by comparing the early development of different ______
a. dinosaurs
b. backbones
c. proteins
d. organisms |
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Definition
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Term
6.2
Scientists infer that species with similar body structures and development patterns had a common _____
a. environment
b. predator
c. ancestor
d. gene |
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Definition
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Term
6.2
Similar structures that related species have inherited from a common ancestor are called ______ structures. |
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Definition
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Term
| 6.2 Scientists compare the _____ bases in the DNA of different species to infer how closely related the species are |
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Definition
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Term
6.2
In most cases, evidence from DNA and __________________ has confirmed conclusions about evolutionary relationships based on fossils, embryos, and body structure |
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Definition
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Term
6.2
An organism's _________ is its basic body plan. |
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Definition
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Term
6.2
Fish, amphibians, reptiles, birds and mammals all have an internal skeleton with a ______________ |
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Definition
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Term
6.2
A scientist can compare the order of _______ in a protein to see how closely related two species are |
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Definition
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Term
6.3
A natural catastrophe such as a river or volcano may separate group members.
a. True
b. False |
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Definition
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Term
6.3
A NEW SPECIES CAN FORM WHEN A GROUP OF INDIVIDUALS REMAIN COMPLETELY SEPARTED FROM THE REST OF ITS family LONG ENOUGH TO EVOLVE DIFFERENT TRAITS THAT PREVENT REPRODUCTION.
A. TRUE
B. FALSE |
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Definition
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Term
6.3
The Kaibab squirrel and the Abert's squirrel are members of the SAME species.
a. True
b. False |
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Definition
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Term
6.3
Scientists have developed two patterns to describe the rate of evolution. List them. |
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Definition
gradualism
punctuated equilibrium |
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Term
6.3
The fossil record shows patterns of gradualism over _____ periods of time.
a. short
b. long |
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Definition
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Term
6.3
______ explains how variations can lead to changes in a species. |
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Definition
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Term
6.3
_____occurs when some members of a species become cut off. |
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Definition
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Term
6.3
The cow and the dog are separate species, unable to ______ with each other. |
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Definition
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Term
6.3
_____ is a pattern of new species forming over very long periods of time. |
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Definition
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Term
6.3
____________ is a pattern of new species evolving during short periods of rapid change. |
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Definition
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