BIL 160 Lecture Notes - Lecture 1: Paratype, Outcrossing, Genetic Drift
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28 Apr 2016
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There is no such thing as the most highly evolved species. Evolution theory: theory: explanation of what we see in natural world, specific. Biodiversity: variability among living organisms from all sources, variety of living species on earth. Identifies name and class of animals: taxonomist, systematist: identifies evolutionary relationships. Type material: collection of specimens of a species, used to describe a brand new species that will be created from the sample. Holotype: specimen used as description to describe a species. Paratype: the other animals in the sample that are compared to the holotype. Species: population in nature that can breed and produce viable offspring: inbreeding: mating between closely related individuals (share same genes, outbreeding: mating between unrelated conspecifics. Genetic variety: genome: full dna sequence. Nuclear genome: inside nucleus (humans=46 sets of chromosomes) Biological control agents: living things that help us control invasive species without the use of poison/pesticides.
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Related Questions
Which statement about evolution by natural selection isfalse?
Natural selection allows organisms with higher fitness toreproduce more successfully. |
Natural selection favors those traits that confer higherfitness in the environment. |
Natural selection is a random change in characteristics of apopulation over generations. |
Evolution by natural selection affects populations oforganisms, not individual organisms. |
An organism's fitness depends on its _____.
ability to survive and reproduce |
ability to swap genetic material with other organisms |
physical size |
ability to mutate |
population |
Consider the heavily armored stickleback fish population thatcolonized the lake. If all the individuals in that population weregenetically identical, what do you predict would happen when theycolonized the freshwater lake?
The population would increase, as it has increased foodresources. |
The population would evolve through natural selection to bebetter adapted to its environment. |
The population would decrease due to more juvenile fish beingeaten. |
No answer text provided. |
Which of the following are adaptations?
Thicker beaks on finches that allows them to eat large seeds,when large seeds are the most abundant. |
Less armor on stickleback fish in freshwater that allows themto grow faster to avoid predation. |
More armor on stickleback fish in the ocean that prevents themfrom being eaten by larger predators. |
None of the above. |
All of the above. |