| Genetic Terminology Below you will find terms and their definitions. These terms will be used within the lessons. Please read their definitions so that you may better understand what is being spoken about within each lesson. |
Allele- one member of a pair or series of genes that occupies a specific position
on a specific chromosome
Chromosome- a threadlike linear strand of DNA and associated proteins in the
nucleus of an animal that carries the genes and functions in the transmission
of hereditary information
Dilution- an effect that causes a degree of lightening to the melanin of the coat
or skin pigmentation
Dominant- being an allele that produces the same phenotypic effect whether
inherited with a homozygous or heterozygous allele.
Eumelanin- a melanin pigmentation that is some shade of black or brown
Gene- a portion of a DNA molecule that serves as the basic unit of heredity,
controls the characteristic that the offspring will have by transmitting
information
Genotype- The combination of alleles located on homologous chromosomes
that determines a specific characteristic or trait.
Homozygous- relating to a cell that has two identical alleles for a particular trait
at corresponding positions on homologous chromosomes
Heterozygous- relating to a cell that has two different alleles at corresponding
positions on homologous chromosomes.
Loci- (plural) "locality", the position that a given gene occupies on a
chromosome.
Locus- (singular) "locality", the position that a given gene occupies on a
chromosome.
Phaeomelanin- a melanin pigmentation that is some shade of red, orange, gold
or yellow
Phenotype- The physical appearance of an organism as distinguished from its
genetic makeup.
Recessive- expressed only when the determining gene is in the homozygous
condition
Have some ideas for terms that need definition? Contact us
on a specific chromosome
Chromosome- a threadlike linear strand of DNA and associated proteins in the
nucleus of an animal that carries the genes and functions in the transmission
of hereditary information
Dilution- an effect that causes a degree of lightening to the melanin of the coat
or skin pigmentation
Dominant- being an allele that produces the same phenotypic effect whether
inherited with a homozygous or heterozygous allele.
Eumelanin- a melanin pigmentation that is some shade of black or brown
Gene- a portion of a DNA molecule that serves as the basic unit of heredity,
controls the characteristic that the offspring will have by transmitting
information
Genotype- The combination of alleles located on homologous chromosomes
that determines a specific characteristic or trait.
Homozygous- relating to a cell that has two identical alleles for a particular trait
at corresponding positions on homologous chromosomes
Heterozygous- relating to a cell that has two different alleles at corresponding
positions on homologous chromosomes.
Loci- (plural) "locality", the position that a given gene occupies on a
chromosome.
Locus- (singular) "locality", the position that a given gene occupies on a
chromosome.
Phaeomelanin- a melanin pigmentation that is some shade of red, orange, gold
or yellow
Phenotype- The physical appearance of an organism as distinguished from its
genetic makeup.
Recessive- expressed only when the determining gene is in the homozygous
condition
Have some ideas for terms that need definition? Contact us
| I am ready to move onto Lesson #2: K Locus Please Take Me To Lesson #2 Please Take Me To Color Home |
