Ch14 Flashcards
(23 cards)
An observable heritable feature that may vary among individuals
Character
A technique associated w/prenatal diagnosis in which amniotic fluid is obtained by aspiration from a needle inserted into the uterus
Amniocentesis
The situation in which the phenotypes of both alleles are exhibited in the heterozygote because both alleles affect the phenotype in separate, distinguishable ways
Codonminance
The situation in which the phenotypes of the heterozygote & dominant homozygote are indistinguishable
Complete Dominance
An organism that’s heterozygous w/respect to two genes of interest
Dihybrid
A type of gene interaction in which the phenotypic expression of one gene alters that of another independently inherited gene
Epistasis
The first filial, hybrid offspring arising from a parental cross
F1 Generation
The offspring resulting from interbreeding of the hybrid F1 generation
F2 Generation
The genetic make up, or set of alleles, of an organism
Genotype
Having two different alleles for a given gene
Heterozygous
Having two identical alleles for a given gene
Homozygous
In genetics, the mating, or crossing, of two true-breeding varieties
Hybridization
The situation in which the phenotype of heterozygotes is intermediate btwn the phenotypes of individuals homozygous for either allele
Incomplete Dominance
Mendel’s second law, stating that each pair of alleles segregates, or assorts, independently of each other pair during gamete formation
Law of Independent Assortment
Mendel’s first law, stating that the two alleles in a pair segregate into different gametes during gamete formation
Law of Segregation
The true-breeding parent individuals from which F1 offspring are derived in studies of inheritance
P Generation
The observable physical & physiological traits of an organism, which are determined by its genetic makeup
Phenotype
The ability of a single gene to have multiple effects
Pleiotropy
An additive effect of two or more genes on a single phenotypic character
Polygenic Inheritance
One of two or more detectable variants in a genetic character
Trait
Referring to organisms that produce offspring of the same variety over many generations of self-pollination
True-Breeding
A form of dwarfism caused by a rare dominant allele
Achondroplasia
(Fertilization btwn different plants) can be achieved by dusting one plant w/pollen from another
Cross-Pollination
