Bio 222 2
Terms
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- Define inheritance.
- genetic transmission of characteristics from parents to offspring
- Define heredity.
- biological similarity of offspring and parents
- Define gene.
- physical and functional unit of heredity which carries info from one generation to the next
- Define DNA.
- double chain of linked nucleotides-fundamental substance genes are composed of
- Define helix.
- curve or spiral (structure of DNA first proposed by Watson and Crick)
- Define nucleotide.
- molecule composed of a nitrogen base, sugar and phosphate group: basic building block of nucleic acids
- Define RNA
- single stranded nucleic acid
- Define transcription.
- synthesis of RNA from a DNA template
- Define allele.
- one of the different forms of a gene that can exist at a single locus
- Define polymorphism
- occurance in a population of several phenotypic forms associated with alleles of one gene or homologs of one chromosome
- Define mutant.
- an organism or cell carrying a mutation
- Define wild type.
- the genotype or phenotype that is found in nature or in the standard laboratory stock for a given organism
- Define development
- process where a single cell becomes a differentiated organism
- Define genotype
- specific allelic composition of a cell
- Define phenotype
- form taken by some character in a specific individual
- Define continuous variation
- variation showing an unbroken range of phenotypic values
- Define discontinuous variation
- variation having distinct classes of phenotypes for a particular disease
- Define norm of reaction.
- pattern of phenotypes produced by a given genotype under different environmental conditions