Recombinant Progeny
Recombinant Progeny - Related Videos
14:23
Recombineering Homologous Recombination Constructs in Drosophila
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Cited by 9 •
2013
Homologous recombination techniques greatly advance Drosophila genetics by enabling the creation of molecularly precise mutations. The recent adoption of recombineering allows one to manipulate large pieces of DNA and transform them into Drosophila6. The methods presented here combine these techniques to rapidly generate large homologous recombination vectors.
08:36
Modified ES / OP9 Co-Culture Protocol Provides Enhanced Characterization of Hematopoietic Progeny
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Cited by 12 •
2011
mStrawberry OP9 cells allow for complete evaluation of all ES-derived progeny from co-culture.
08:39
Shifting Zebrafish Lethal Skeletal Mutant Penetrance by Progeny Testing
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Cited by 8 •
2017
The goal of this protocol is to alter the penetrance of lethal skeletal mutant phenotypes in zebrafish by selective breeding. Lethal mutants cannot be grown to adulthood and bred themselves, therefore this protocol describes a method for tracking and selecting penetrance through multiple generations by progeny testing.
08:59
Identification Of Erythromyeloid Progenitors And Their Progeny In The Mouse Embryo By Flow Cytometry
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Cited by 13 •
2017
While infiltrating macrophages are continuously recruited to adult tissues from circulating precursors, resident macrophages seed their tissue during development, where they are maintained without further input from progenitors. The progenitors for resident macrophages were recently identified. Here, we present methods for the genetic fate mapping of the resident macrophage progenitors.
08:56
Recombineering and Gene Targeting
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2023
One of the most widely used tools in modern biology is molecular cloning with restriction enzymes, which create compatible ends between DNA fragments that allow them to be joined together. However, this technique has certain restrictions that limit its applicability for large or complex DNA construct generation. A newer technique that addresses some of these shortcomings is recombineering, which modifies DNA using homologous recombination (HR), the exchange between different DNA molecules based...
FAQs
Crossing over creates variation by exchanging DNA between homologous chromosomes during meiosis, so alleles that were previously separated can be transmitted together in a new arrangement. This mechanism operates alongside independent assortment, which reshuffles whole chromosome combinations in gametes. Considering both processes helps explain why offspring can differ genetically from either parent.
Independent assortment changes which maternal and paternal chromosomes enter a gamete, whereas crossing over changes DNA combinations within homologous chromosomes. Recombinant progeny therefore reflect two levels of meiotic reshuffling rather than a single event. Separating these contributions helps biologists interpret offspring genotypes and connect observed inheritance patterns to chromosome behavior.
Fertilization unites genetically distinct gametes produced through meiotic reshuffling. The resulting offspring inherit combined genetic arrangements, allowing the effects of independent assortment and exchanged DNA to appear in their genotypes and phenotypes. This step gives researchers an observable generation in which new inheritance patterns can be examined.
Researchers typically classify offspring by phenotype and, when available, genotype, then identify combinations that differ from the parental arrangements. Comparing these categories across a progeny group reveals how alleles were transmitted. Such observations provide experimental evidence for chromosome behavior and allow inheritance patterns to be connected with meiotic processes.
The relative occurrence of offspring with different allele combinations can be used to estimate genetic distances and construct chromosome maps. This makes progeny analysis a practical way to infer relationships among genes from inheritance data rather than observing chromosome arrangements directly. The resulting maps help organize genes along chromosomes.
In biology, these offspring connect meiosis with larger questions about genetic variation and inheritance. Their genotypes and phenotypes support research on evolution, breeding, and genetic disease. Because the same observations can reveal allele transmission and chromosome behavior, they serve as a bridge between cellular mechanisms and biologically important traits.