Show:
Evidence of Evolution
Inherited vs. Acquired & types of selection
Darwin
Changes in Gene Pool
Vocabulary & Labs
100
A bird wing and a bat wing are examples of _____________ structures.
What is homologous structures
100
The type of selection that occurs when the two extreme phenotypes are selected for
What is disruptive
100
What are the three conditions Darwin outlined that must be present for natural selection to occur?
What is -more offspring produced than will survive -a trait shows variations -traits are able to be inherited
100
When a group of individuals only have offspring with a small population of individuals, the chance of a trait showing up becomes much higher. (example is the Mennonite population); this is called:
What is the Founder Effect
100
What are two types of selection that were demonstrated in the Bright vs. Drab Guppy activity?
What is sexual selection and natural selection
200
Evidence of evolution that compares organisms in their earliest forms to show similarities.
What is embryology
200
The type of selection that occurs when humans choose the most favorable traits of an organism and then breed the organisms with the most favorable traits together
What is artificial selection
200
When a species changes over time to where they cannot mate and produce fertile offspring with others of the same species, then this has occurred
What is speciation
200
If a trait is favorable and can be inherited, what will the frequency of that trait do over time?
What is increase/get bigger
200
___________ structures have a common ancestor and may or may not have a common function. (homologous or analogous)
What is homologous
300
The butterfly wing and bat wing are examples of what type of structures? Analogous or homologous?
What is analogous
300
An acquired trait cannot be inherited because it does not change the organisms......
What is genes/DNA
300
A condition when a population becomes smaller and the gene frequencies change due to chance (volcano, river separates population)
What is genetic drift
300
In stabilizing selection, the ___________ trait is selected for.
What is average
300
In the mussel beach lab, what did the following represent? -fabric: -beads: -different colored beads:
What is -fabric=environment -beads=organisms -different colored beads=variations
400
The following is the amino acid sequence of a human. Human: A C A B B C D E Which of the following organisms is the most closely related? Organism A: A B A D D C E F Organism B: A C A B B D E C Organism C: A C B D E F G H
What is Organism B
400
A difference in a trait among a species is known as a ____________ in that trait.
What is a variation
400
The organisms that have the traits that make them the best suited to their environment are said to have the highest ___________
What is fitness
400
A type of selection where ONE of the extreme phenotypes is selected for
What is directional
400
When two species evolve independently of one another but evolve to have the same traits, this is called ___________ evolution.
What is parallel
500
A structure or a behavior of an organism that is no longer used in present day, but was used by ancestors is called a/an ______________ organ.
What is a vestigial organ
500
The type of selection that occurs when an organism undergoes mutations and becomes better suited to their environment over time.
What is natural selection
500
Darwin's finches adapting over time to different environments is an example of parallel, divergent or convergent evolution?
What is divergent
500
True or False: If the environment changes, the present generations may experience mutations that will better adapt them for their surroundings.
What is FALSE. The future generations will need to have random chance mutations that better adapt them.
500
A random, chance change in the DNA of an organism that may or may not make them better adapted to the environment is called a(n)
What is mutation