Show:
Mechanisms
Speciation
Myths
Vocabulary
12 B Bio - 2K16
100
What are three mechanisms for evolution? Hint: Graphs
Directional, stabilising and disruptive.
100
What are the two types of speciation pressures?
Sympatric and allopatric
100
What do people get wrong about humans and monkeys?
People believe we evolved from monkeys - but in fact we have a common ancestor.
100
How many vocab words start with 'G'?
2 - gene pool and generation
100
Who did I tell you to make friends with before you went on the Myall Ck excursion?
Greg Ringwood
200
The speciation of a single population is best represented by which mechanism?
Disruptive
200
What is an example of temporal speciation?
Different breeding seasons, circadian rhythms, life cycles
200
If evolution is just theory, can we say it is proven?
Yes, there is enough evidence to support it
200
What are two vocab words that have the same ending?
Answers may vary e.g. prezygotic and postzygotic
200
Gullies are a type of...
Erosion
300
Goldilocks and the three bears is best represented by which mechanism for evolution?
Stabilising
300
True/false Scientists claim that evolution is random
False. Evolution is pressured by natural selection.
300
What is gene flow?
Transfer of DNA (allele frequencies) through generations, or between groups of organisms
300
What was the first unit we studied?
Cells, cell membranes, osmosis etc.
400
If all the trees in a forest species gradually became darker - what mechanism is represented?
Directional
400
Describe the allopatric specation most likely to happen in Dalby?
Any sort of plausible physical isolation.
400
If evolution takes such a long time, how do we know it ever happened?
1. Fossil record 2. Embryology 3. Comparative anatomy 4. DNA homology 5. Geographical distribution
400
Definition: In the context of biology, this is is the existence of shared ancestry between a pair of structures, or genes, in different taxa. A common example of this in evolutionary biology, are the wings of bats and the arms of primates.
Homology, or homologous traits
400
What 4 classrooms have we used for Biology over the past 2 years?
H36, N04, E29, A23/24
500
True/false Directional selection continues to change. It can even go "backwards" (species changes back to a previous dominant phenotype)
True
500
Under what conditions would speciation not occur?
The Hardy-Weinberg conditions: 1. Large population 2. Mating is random 3. No immigration or emigration 4. No mutations 5. No natural selection
500
What have people used to try and disprove evolution.
Embryology
500
Definition: Describes changes in population genetics in which extreme values for a trait are favored over intermediate values
Disruptive selection
500
Pick an evolution/natural selection topic, and figure out how to teach it to a prep class.
Various answers accepted.