Shared Flashcard Set

Details

CSU BIOL 5515 Developmental Biology Chapter 20
NA
17
Biology
Undergraduate 4
04/25/2011

Additional Biology Flashcards

 


 

Cards

Term
Allometry
Definition
Evolutionary mechanism in which the relative growth rates of different modules changes with respect to each other.
Term
Correlated progression
Definition
Situation in which evolutionary changes in one module of an embryo affect development in another module.
Term
Deep homology
Definition
A molecular homology found in two groups of organisms which diverged from a common ancestor that existed in the distant past.
Term
Developmental constraints
Definition
Physical, morphogenetic, and phyletic restraints that limit the number of body plans that can be created by evolution.
Term
Dissociation
Definition
Situation in which changes in development in one module do not affect development of other modules.
Term
Duplication and divergence
Definition
Mechanism of evolutionary change whereby modules are copied, followed by differentiation and specialization among the redundant structures.
Term
Epialleles
Definition
Heritable variants in chromatin structure and gene expression states that are not based on variation in DNA sequences.
Term
Genetic assimilation
Definition
Process by which an initially environmentally induced phenotype through selection becomes fixed in a population so that the phenotype develops even in the absence of environmental induction.
Term
Epigenetic inheritance systems
Definition
Processes by which phenotypic variation not associated with DNA sequence variation is inherited.
Term
Heterochrony
Definition
Evolutionary mechanism in which the relative timing of development in different modules of a developing system change with respect to each other.
Term
Heterometry
Definition
Evolutionary change in the amount of a structure or level of gene expression.
Term
Heterotopy
Definition
Expression of an existing structure or function in a different part of the body.
Term
Heterotypy
Definition
Evolutionary production of a new kind of gene or structure.
Term
Modularity
Definition
Development through a series of discrete and interacting parts.
Term
Molecular parsimony
Definition
Existence and use throughout the animal kingdom of a relatively small set of regulatory genes that are used to build animal body plans.
Term
Orthologs
Definition
Related genes in different species that are descended from the same gene in a common ancestor.
Term
Paralogs
Definition
Related genes that are derived from gene duplication within a single genome.
Supporting users have an ad free experience!