Super Quiz definitions a-d
About this set
Created by:
maroconnor on January 21, 2009
Subjects:
Academic decathlon, acadec, decathlon, super quiz
Description:
from the USAD glossary 2008-2009
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18 terms
Terms | Definitions |
|---|---|
 abiogenesis | life from nonliving material |
| adaptation | characteristic that affords an organism greater fitness |
| adaptive radiation | evolutionary diversificiation into several different populations |
| alleles | different versions of the same gene |
| allopatry | occuring in distinctly seperate locations |
| allopatric speciation | geographically mediated species formation |
| amniotic egg | egg w/ compartmentalized sacs that allowed vertebrates to reproduce on land |
| analogous structures | similar features from common environments |
| binomial nomenclature | developed by Linnaeus; first term genus, second term species |
| biogeography | explaining the ecological and historical reasons for the observed geographic distributions of organisms |
| chromosome | double-stranded DNA molecule, contains a series of genes |
| clade | group of organisms that share a most recent common ancestor; "monophyletic group" |
| cladistics | method of phylogeny reconstruction and system of classification that groups organisms according to the explicit definition of uniquely shared and derived characteristics |
| cladogram | branching/bifurcating diagram; shows evolutionary relationships; depicts points where species diverged |
| common ancestor | real or hypothetical taxon from which two evolutionary lineages are directly descended |
| diploid | two matched sets of chromosomes, therefore, two sets of geenes in nucleus |
| direct fitness | how many alleles a genotype contributes to next generation's gene pool |
| DNA | deoxyribonucleic acid; nucleotides in a double helix; controls inheritance |
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