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STAAR #3

STAAR Reporting Category #3

QuestionAnswer
Common Ancestor the most recent ancestral form or species from which two different species evolved
Fossil Record A term used by paleontologists to refer to the total number of fossils that have been discovered, as well as to the information derived from them
Biogeography the study of the geographical distribution of living things.
Anatomical Homologies morphological(form or structure) or physiological (function) similarities between different species of plants or animals
Molecular Homologies genes shared due to common ancestry
Developmental Homologies Studying the embryological development of living things provides clues to the evolution of present-day organisms
Natural Selection the process by which forms of life having traits that better enable them to adapt to specific environmental pressures
Adaptations any alteration in the structure or function of an organism or any of its parts that results from natural selection and by which the organism becomes better fitted to survive and multiply in its environment
Diversity degree of variation of life forms within a given ecosystem, biome, or an entire planet
Inherited Variation differences in genetic information passed down through
Evolutionary Mechanisms Mutation, migration (gene flow), genetic drift, and natural selection
Genetic Drift change in the frequency of a gene variant (allele) in a population due to random sampling
Gene Flow the transfer of alleles of genes from one population to another
Mutation a permanent change in the DNA sequence of a gene's which alters the amino acid sequence of the protein encoded by the gene
Recombination change in genetic sequence which increases variation among organisms
Cell Complexity eukaryotic cells are larger and more complex than prokaryotic cells
Taxonomy classfy living organisms into groups; Domain,Kingdom,Phylum,Class,Order,Family,Genus,Species
Archaea Kingdom prokaryotic kingdom of bacteria able to live in harsh enviroments which are hot,salty or acidic
Eubacteria Kingdom prokaryotic kingdom of bacteria with majority of organisms are beneficial and only a few are harmful
Protist Kingdom eukaryotic kingdom of mostly one celled organism divided into 3 groups: animal like, plant like, and fungus like
Fungi Kingdom eukaryotic kingdom of heterotrophic decomposers with cell walls made of chitin
Plant Kingdom eukaryotic kingdom of autotrophic, multicellular stationary organisms which undergo photosynthesis
Animal Kingdom eukaryotic kingdom of heterotrophic, multicellular mobile organisms.
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