Is pure line homozygous or heterozygous?
-The pure line is true-breeding genotypes. It is a line that in successive generations has been made homozygous with all genes under consideration. It is a line in which homozygous individuals only bear homozygous offspring like parents. Therefore, pure line breed only applies to homozygosity.
What is a pure line genotype?
Definitions: Genotype, the fundamental hereditary con- stitution or combination of genes of an or- ganism. Biotype, a group of individuals possessing the same genotype. Pure line, a group of individuals traceable through solely self-fertilized lines to a single homozygous ancestor.
Are Purelines homozygous?
Additional information: A pureline is the progeny of a single self fertilized homozygous plant.
Is pure line dominant or recessive?
Each parent has a gene pair in each cell for each trait studied. The F1 from a cross of two pure lines contains one allele for the dominant phenotype and one for the recessive phenotype.
What is pure line selection?
Pure-line selection involves selecting and breeding progeny from superior organisms for a number of generations until a pure line of organisms with only the desired characteristics has been established.
What are the heterozygous genotypes?
(HEH-teh-roh-ZY-gus JEE-noh-tipe) The presence of two different alleles at a particular gene locus. A heterozygous genotype may include one normal allele and one mutated allele or two different mutated alleles (compound heterozygote).
What is the function of pure lines?
Similarly, the production of pure lines from segregating populations is also necessary to identify genes for a trait of interest. The developed pure lines provide permanent populations allowing phenotyping of traits of the same genotypes at different times and under different environmental conditions.
What is difference between pure line and inbred line?
An inbred line is a pure line, or nearly homozygous line, usually developed by inbreeding. The source of the inbreds may be an open-pollinated variety; a single·, three-way-, or double-cross hybrid; a synthetic variety; or a population improved through recurrent selection.
How we can obtain homozygous pure line breed?
mating of related individuals of same breed. mating of unrelated individuals of same breed. mating of individuals of different breed.
What is the meaning of pure lines in biology?
pure line A population of plants or animals all having a particular feature that has been retained unchanged through many generations. The organisms are homozygous and are said to `breed true’ for the feature concerned. A Dictionary of Biology.