Chapter 1 Flashcards
(30 cards)
What are the 3 domains?
Eukarya, bacteria, archaea
The study of evolutionary relationships
Phylogeny
Change in gene frequency over a period of time?
Evolution
Smallest group of individuals that share a common ancestor
Phylogenetic Species
Hypothesis that represents the possible evolutionary history of a group of organisms
Phylogenetic tree
Phylogenetic tree with the fewest evolutionary transitions is most likely correct
Maximum parsimony
Fewer evolutionary transitions between 2 groups
Sister groups
New properties that arise with each step upward in the hierarchy of life
Emergent properties
What is level of biological organization?
Atoms, molecules, cells, organelles, tissues, organs, organ system, organism, population, community, ecosystem, biosphere
All individuals in a specified area
Population
Array of organisms in an ecosystem
Communities
Living and nonliving things in a particular area
Ecosystems
Consists of all life on earth and all places where life exists
Biosphere
What are the 2 forms of cells?
Eukaryotic and prokaryotic
Has a membrane closed nucleus and organelles, includes protists, plant,s animals, fungi
Eukaryotic
Lacks a membrane closed nucleus and organelles, includes bacteria and archaea
Prokaryotic
Provide blueprints for making proteins, control protein production
Genes
Process of information encoded in DNA directs the synthesis of proteins
Gene expression
Entire library of genetic instructions that an organism inherits
Genome
Study of whole sets of genes and their interactions within a species
Genomics
An end product that speeds up its own production
Positive feedback
Response reduces the initial stimulus
Negative feedback
Process in which individuals that have certain traits tend to survive at high rates
Natural selection
Derive generalizations from observations
Inductive reasoning