Does the following situation describe natural selection or artificial selection? Following the Industrial Revolution, policies were enacted to reduce air pollution. Following these policies, the population of light-colored moths increased.
Natural selection
True or false: With genetic drift alleles become more or less common in large populations.
False
True or False: Reproductive isolation can lead to the formation of new species
True
What is the maximum number of organisms that the environment can support?
Carrying capacity
What is one way that gel electrophoresis separates DNA?
By size, by charge and shape
What do we call something that improves an organism's ability to survive?
Adaptation
What is an allele?
A form or version of a gene
What type of reproductive isolation is the result of being separated by bodies of water or mountain ranges?
Geographic isolation
True or false: A population includes abiotic factors
False
What end of the gel electrophoresis apparatus do we load DNA?
The negative end
Self-decoration
What is an example of a phenotype?
Height, hair color, beak size, birth mass
What is being demonstrated by Darwin's finches adapting to islands with different kinds of available food?
Adaptive Radiation
Deer and rabbits feed on the same type of grassy vegetation. How would you describe their species interaction?
Interspecific competition
Restriction enzymes certain DNA sequences and make cuts that leave overhangs called ___________.
Sticky ends
If average-sized seeds decrease, birds with smaller and larger beaks are better equipped to survive on small and large-sized seeds. What type of selection is described?
Disruptive selection
A fire devastates a forest population of deer and leaves some survivors. The survivors represent a portion of the gene pool. What type of effect is being demonstrated in this population?
Bottleneck Effect
Some insects have been able to alter or eliminate the poisons that evolved plants produce. What is this an example of?
Coevolution
What is an example of a density-dependent factor?
Competition, disease, predation
What is the process called that we use to insert a recombinant plasmid into a bacterial cell?
Bacterial transformation
Name one of the 4 factors that results in evolution
2) The heritable genetic variation of individuals in a species due to a mutation and sexual reproduction
3) Competition for limited resources
4) The proliferation of those organisms that are able to better survive and reproduce in the environment.
How does the mechanism of genetic drift differ from the mechanism of natural selection?
With convergent evolution, unrelated organisms appear to resemble one another. What are the structures that look similar in these organisms called?
Analogous structures
Decrease in population
A gene that makes it possible to distinguish bacteria that carry a plasmid (and the foreign DNA) from those that don’t is called a(an)
genetic/ selective marker