Pure line : Individual which is homozygous for all traits.
Inbreeding: Mating between relatives/mating between individuals have same genotype..
Selfing: Self fertilization possible only in bisexual.
Cross: Cross hybridisation between 2 individuals.
Gene/Factor : part of DNA which control a particular character. 1gene=1 enzyme
Gene Locus: A specific region of a chromosome which represent a single gene is called gene locus.
Alleles: Copy of 1 gene is called alleles.
Dominant and Recessive Allele:
Trait which expressed /appears in homozygous as well as heterozygous condition is called domiannt.It may be pure or not.For example:TT or Tt .Here,T is dominant gene.
Trait which expressed itself only in homozygous condition is called recessive.For example:tt.Here,t express itself only in homozygous form.Always give purw breed.
Wild Allele: An original allele which is dominant and widely spread in population.
Mutant Allele: Recessive amd not widely distributed.
Character and Trait:
A feature of an individual called character.For example-height(a feature) is a character.While,Alternate/Contrasting/Detect-able forms of a feature is called trait.For example-tallness and dwarfness.
Genotype and Phenotype:
physical appearance of an individual with respect to a trait is called phenotype.example Tallness
Genetic constitution of an individual with respect to a particular trait called genotype.
TT(homozygous tall)Tt(heterozygous tall).
Genome: Genetic material of a single individual is called genome.
Gene pool: Genetic material of a population is called gene pool.
Homozygous and Heterozygous:
When 2 similar type of alleles present together,then individual is called homozygous.It give pure breed.For example:TT or tt
When 2 dissimilar type of alleles present together , then individual is calles heterozygous.It give impure breed.For example:Tt
Hemizygous: When an individual possess two different type of chromosomes in a pair of sex chromosomes.For example:Human male( Xy)
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