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64 Cards in this Set
- Front
- Back
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What is defined by the biological species concept? |
Biological species are defined by reproductive isolation and it is the largest unit interbreeding can occur |
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What species concept would be used when a scientists needs to separate two grasshoppers into species with no given information |
Morphological |
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What species concepts would put wolves and dogs together? |
Reproductive isolation, sympathetic speciation, pre-zygotic barriers |
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What is the first step before reproductive isolation after geographic separation? |
Natural selection |
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What is a stable hybrid zone? |
Continued production of hybrid individuals |
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What mechanism would reverse speciation? |
Increased gene flow |
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In a narrow hybrid zone what is true if the alleles? |
Heterozygosity should be higher among species there |
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Fossils with 1/16 carbon should be how old? |
22,900 years |
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What planet substance is the richest source of fossils? |
Sedimentary Rock |
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Adaptive radiation... |
Allows new species to occupy different habitats |
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Hox genes... |
Control body plan of embryos |
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Caterpillars are an example of? |
Pedomorphosis |
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Exaptations.... |
Evolve in one environment but are used for another function |
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What is the approximate age of marine fossils in undisturbed sedimentary rock overlying igneous rock? |
500,000 years |
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Adaptive radiation does not cause.... |
Colonization of an isolated region that contains habitat and few competitor species |
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The evolution of the swim bladder is an example of... |
Exaptation |
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How were earth conditions different three billion years ago? |
Only earth was intensely bombarded by large space debris |
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How were earth conditions different three billion years ago? |
Only earth was intensely bombarded by large space debris |
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What is the correct sequence of the origin of life? |
Synthesis of organic monomers, synthesis of organic polymers, formation of photobionts, formation of DNA based genetic systems |
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What were the first genes in Earth? |
Self replicating RNA molecules |
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What were the first genes in Earth? |
Self replicating RNA molecules |
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What best represents the punctuated equilibria model? |
Most new species accumulate unique features relatively rapidly as they come into existence then change little for rest of duration of species |
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What doesn't contribute to allopatric speciation? |
Extensive gene flow between populations |
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What question is currently most problematic? |
How can amino acids, simple sugars, and nucleotides be synthesized abiotically? |
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How far back does the fossil record extend? |
3.5 billion years |
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How far back does the fossil record extend? |
3.5 billion years |
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Why is it believed that prokaryotes evolved before eukaryotes? |
Oldest fossilized cells resemble prokaryotes |
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How far back does the fossil record extend? |
3.5 billion years |
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Why is it believed that prokaryotes evolved before eukaryotes? |
Oldest fossilized cells resemble prokaryotes |
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What would be surprising to observe in 3.5 billion year old stromatolites? |
Nucleus |
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How far back does the fossil record extend? |
3.5 billion years |
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Why is it believed that prokaryotes evolved before eukaryotes? |
Oldest fossilized cells resemble prokaryotes |
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What would be surprising to observe in 3.5 billion year old stromatolites? |
Nucleus |
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What was the first genetic material? |
RNA |
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What is the greatest impact organisms had? |
Early Cyanobacteria released CO2 into the atmosphere during water splitting in photosynthesis |
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What is the greatest impact organisms had? |
Early Cyanobacteria released CO2 into the atmosphere during water splitting in photosynthesis |
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Bacteria in preserved jars... |
Undergo death as result of water loss of cells |
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What is the greatest impact organisms had? |
Early Cyanobacteria released CO2 into the atmosphere during water splitting in photosynthesis |
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Bacteria in preserved jars... |
Undergo death as result of water loss of cells |
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In bacteria with antibiotic resistance where is DNA? |
Nucleoid region, endoscope, plasmids |
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Prokaryote flagellum is a... |
Complex motor in cell wall and plasma membrane |
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What is the difference between eukaryotes cytosol and prokaryote ribosomes? |
Some antibiotics can block protein synthesis in bacteria without affects in the eukaryotic host |
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What is the difference between eukaryotes cytosol and prokaryote ribosomes? |
Some antibiotics can block protein synthesis in bacteria without affects in the eukaryotic host |
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Genomes of prokaryotes are composed of... |
Circular DNA |
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Where is prokaryotic genetic information located? |
Nucleoid |
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Where is prokaryotic genetic information located? |
Nucleoid |
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A: diploid cell with 12 B: diploid cell with 16 how many will C have? |
28 |
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What fuels CO2? |
Chemoautotrophs |
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What fuels CO2? |
Chemoautotrophs |
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What is thiobacillus ferroxidons? |
Chemoautotroph |
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What fuels CO2? |
Chemoautotrophs |
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What is thiobacillus ferroxidons? |
Chemoautotroph |
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Why are prokaryotic populations larger than multicellular eukaryotes? |
Small, reproduce by binary fission, short generation times |
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What has led to origin of new species? |
Sympathetic speciation and polyploidy |
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How can reproductive barriers form between populations while their members stay in contact? |
Increased polyploidy |
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What occurs first in beginning speciation? |
Interruption of gene flow between two populations |
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What occurs first in beginning speciation? |
Interruption of gene flow between two populations |
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Modern insect wings are.... |
Exaptations |
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What is true of the domain archaea? |
Genetic prospecting had recently revealed existence of many previously unknown archaea species |
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What is true of the domain archaea? |
Genetic prospecting had recently revealed existence of many previously unknown archaea species |
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What are two strategies nitrogen fixing prokaryotes might use? |
Be obligate anaerobes and package enzymes in cells that inhibit oxygen entry |
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Fossilized stromatolites... |
Resemble structures formed by bacterial communities found today only in the shallow marine bays |
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Fossilized stromatolites... |
Resemble structures formed by bacterial communities found today only in the shallow marine bays |
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Only bacteria have histories associated with DNA. True or false? |
False |
