1
The changes in foot structure in a bird population over many generations are best explained by the process of
Evolution
What are the 4 evidences for evolution?
- Fossils
- DNA
- Homologous body structures
- Vestigial organs
What is speciation?
a new species arising from an older one
Organisms with favorable variations reproduce more successfully than organisms with less favorable variations. This statement best describes the concept of
Survival of the fittest
Who was Charles Darwin?
A Naturalist who went on a 5 year voyage to study living things, he noticed organisms differed from islands and mainland and eventually created the modern idea of evolution by natural selection.
Fossils of an extinct species of giant armadillo were found to be similar to a smaller species of armadillo presently inhabiting the same region. This similarity could best be explained on the basis of
1. evolution from older forms
2. inheritance of acquired characteristics
3. use and disuse
4. the heterotroph hypothesis
1
What are the 3 different types of speciation?
- Behavioral Isolation
- Geographic Isolation
- Temporal (seasonal) Isolation
Geographic and reproductive isolation are most closely associated with
1. speciation
2. extinction
3. overproduction
4. competition
1
What was the ship that Darwin was aboard on his journey?
HMS Beagle
Is speciation gradual, abrupt, or both?
Speciation can be either.
When Darwin traveled to the Galapagos Islands, he observed 14 distinct varieties of finches on the islands. The 14 varieties of finches are most likely the result of ?
Biological evolution or Natural Selection
When Darwin traveled to the Galapagos Islands, he studied these organisms.
- Finches
- Iguanas
- etc.
A gene mutation has adaptive value if it
enables an organism to survive an environmental change
or
allows an organism to adapt to its environment
What is extinction?
When a species can no longer survive in its environment and it dies off, it no longer exists.
A change in the base unit sequence during DNA replication can result in
1. variation within an organism
2. rapid evolution of an organism
3. synthesis of antigens to protect the cell
4. recombination of genes within the cell
1.
Question 9 on review packet
4.
Question 7 on review packet
4
Question 15 on review packet
2
Question 3 on review packet
2
Question 19 on review packet
4
What are the 5 Hardy - Weinberg principles?
- Large population
- no mutations
- random mating
- no immigration
- no environmental changes
Certain insects resemble the bark of the trees on which they live. This is an example of?
Natural Selection
According to the Hardy- Weinberg, the gene pool of a population will remain stable if
1. the population is small
2. individuals migrate into and out of the population
3. no mutations occur
4. nonrandom mating occurs by artificial selection
3
Question 4 on review packet
3
Antibiotic-resistant bacteria is an example of which process?
Natural Selection