Charles Darwin
During his voyage on the HMS Beagle, Charles Darwin made many observations in...
Galapagos Islands
Describe natural selection.
Body parts that grow to develop similar physical structures with different functions in closely-related species are known as...
homologous structures
What do scientists use cladograms for?
show evolutionary relationships
What did Charles Darwin observe on his voyage?
species that appeared somewhat similar, with traits that suited to their environment.
When a farmer breeds only his best livestock, it is called...
artificial selection
Various species of scorpion and jelly fish exhibit a venomous sting when threatened. The most recent common ancestor shared by the scorpion and jellyfish do NOT have this characteristic. What kind of evolution is this?
a. convergent
b. divergent
convergent evolution
When an organism has a structure that no longer has any use, like the femur in a whale, this is called a...
vestigial structure
What did Charles Darwin notice about the finches in the Galapagos?
differently shaped beaks
When lions prey on a herd of antelope, some antelope are killed and some escape. Which part of natural selection might be used to describe this situation?
survival of the fittest
All the genes of all the members of a particular population make up a population's...
gene pool
A group of organisms that share a common ancestor on a cladogram are called a...
clade
What is the main theory that Charles Darwin came up with?
Natural Selection
According to Darwins' theory of natural selection, the individuals that tend to survive are those that have...
a. greatest number of offspring
b. characteristics that people value
c. variations best suited for their environment
d. characteristics their parents acquired by use and disuse
c. variations best suited for their environment
The wings of Vampire bats and House finches are what kind of structures?
analogous structures
How do new species form?
become so genetically different because of adaptations so they can no longer reproduce with other organisms
What is the name of the book Darwin published?
On the Origin of Species
Which of the following does NOT increase genetic variation?
a. genetic mutation
b. sexual selection
c. crossing over in meiosis
d. genetic drift
d. genetic drift
A change in a sequence of DNA is called a...
mutation
List one way that populations can become isolated.
geographical, temporal, behavioral