Marker-assisted selection in pome fruit breeding
... Most of the available apple and pear markers can be used in marker-assisted selection but MAS efficiency can widely varying depending on the estimated genetic distance between the marker and the linked gene. Of course, the use of two markers flanking the gene of interest is more advisable, in partic ...
... Most of the available apple and pear markers can be used in marker-assisted selection but MAS efficiency can widely varying depending on the estimated genetic distance between the marker and the linked gene. Of course, the use of two markers flanking the gene of interest is more advisable, in partic ...
Recurrent Selection - Crop and Soil Science
... • Heritability of the trait(s) • Extent of GXE • Type of gene action • Effects of inbreeding on the trait • Expected gain per cycle • Number of seasons per cycle • Growing seasons per year and availability of offseason nurseries • Seed quantities required for screening ...
... • Heritability of the trait(s) • Extent of GXE • Type of gene action • Effects of inbreeding on the trait • Expected gain per cycle • Number of seasons per cycle • Growing seasons per year and availability of offseason nurseries • Seed quantities required for screening ...
C1. Quantitative traits are described numerically. Examples include
... usually influenced by multiple genes that exist as multiple alleles. A large amount of environmental variation will also increase the phenotypic overlaps among different genotypic categories. C3. A normal distribution varies in a symmetrical way around a mean value. When graphed, it exhibits a bell- ...
... usually influenced by multiple genes that exist as multiple alleles. A large amount of environmental variation will also increase the phenotypic overlaps among different genotypic categories. C3. A normal distribution varies in a symmetrical way around a mean value. When graphed, it exhibits a bell- ...
Document
... usually influenced by multiple genes that exist as multiple alleles. A large amount of environmental variation will also increase the phenotypic overlaps among different genotypic categories. C3. A normal distribution varies in a symmetrical way around a mean value. When graphed, it exhibits a bell- ...
... usually influenced by multiple genes that exist as multiple alleles. A large amount of environmental variation will also increase the phenotypic overlaps among different genotypic categories. C3. A normal distribution varies in a symmetrical way around a mean value. When graphed, it exhibits a bell- ...
Richard Summers presentation
... Amenable to GM technology which could give large productivity gains at low environmental risk - wheat is highly inbreeding with no wild relatives in the UK Increased productivity makes it possible to release land for farmland birds and other biodiversity purposes ...
... Amenable to GM technology which could give large productivity gains at low environmental risk - wheat is highly inbreeding with no wild relatives in the UK Increased productivity makes it possible to release land for farmland birds and other biodiversity purposes ...
GCCF Breeding Policy - The Governing Council of the Cat Fancy
... or anomalies. A computer programme such as “Breeder’s Assistant” (*see under List of References) or similar, will automatically calculate the percentage of inbreeding for any planned mating. A degree of inbreeding between 1% and 25% over a pedigree of at least eight generations should be regarded as ...
... or anomalies. A computer programme such as “Breeder’s Assistant” (*see under List of References) or similar, will automatically calculate the percentage of inbreeding for any planned mating. A degree of inbreeding between 1% and 25% over a pedigree of at least eight generations should be regarded as ...
Basic Genetics for the Cat Breeder
... not only for maintaining the continuity of a species (or breed) but also for many of the differences between individuals within a species or breed. Thus, if you are a breeder and like a particular “look” in your cats, you could influence the breed positively or negatively depending upon what that “l ...
... not only for maintaining the continuity of a species (or breed) but also for many of the differences between individuals within a species or breed. Thus, if you are a breeder and like a particular “look” in your cats, you could influence the breed positively or negatively depending upon what that “l ...
pdf
... 1. Captive managed: Social resource dynamics completely negated by management. 2. Intensively managed: Direct intervention at the individual and/or subpopulation levels. May exist in extensive systems (as opposed to breeding camps) but with conditions controlled to benefit the focal species. 3. Simu ...
... 1. Captive managed: Social resource dynamics completely negated by management. 2. Intensively managed: Direct intervention at the individual and/or subpopulation levels. May exist in extensive systems (as opposed to breeding camps) but with conditions controlled to benefit the focal species. 3. Simu ...
File
... distributed by either the wind or pollinators, such as bees, it is very difficult to know which plants are reproducing with each other • For his experiments, Mendel needed to control exactly what plants were reproducing with each other… ...
... distributed by either the wind or pollinators, such as bees, it is very difficult to know which plants are reproducing with each other • For his experiments, Mendel needed to control exactly what plants were reproducing with each other… ...
It`s in the Genes - CR Alpacas, Inc.
... is difficult to process for fiber mills (colors must be separated prior to spinning and processing). Since the US is not yet a fiber market, but rather a rare-livestock market, we are not necessarily breeding for all-white solid animals. Some in the US have been pushing natural colors, rather than d ...
... is difficult to process for fiber mills (colors must be separated prior to spinning and processing). Since the US is not yet a fiber market, but rather a rare-livestock market, we are not necessarily breeding for all-white solid animals. Some in the US have been pushing natural colors, rather than d ...
Avian genetic diversity - UC Genetic Resources Conservation Program
... can lay more than 300 eggs in keys in experimental biology was the males (OLSEN 1965). The existence of her first year of production; and study of meiosis, fertilization, and early this line has given rise to the notion the large Rock-Cornish commerembryonic development with a strain that genetic im ...
... can lay more than 300 eggs in keys in experimental biology was the males (OLSEN 1965). The existence of her first year of production; and study of meiosis, fertilization, and early this line has given rise to the notion the large Rock-Cornish commerembryonic development with a strain that genetic im ...
Dissecting the genetics variation of aggressive behaviour in
... Furthermore, the effects of the SNPs with the highest statistic were at least 10% too small to be significantly detected for the experimental size used here. Estimation of genetic variance and genomic estimated breeding values. Table 2 shows the heritability estimates calculated using standard BLUP, ...
... Furthermore, the effects of the SNPs with the highest statistic were at least 10% too small to be significantly detected for the experimental size used here. Estimation of genetic variance and genomic estimated breeding values. Table 2 shows the heritability estimates calculated using standard BLUP, ...
1.6-Genetic Diversity and Heredity
... Inbreeding • Continued breeding of individuals with similar characteristics to maintain the desired characteristics of a line – Example: Pure breeds ...
... Inbreeding • Continued breeding of individuals with similar characteristics to maintain the desired characteristics of a line – Example: Pure breeds ...
M4_GenotypicValues - Crop and Soil Science
... variance due to regression of genotypic values on genotype (number of ...
... variance due to regression of genotypic values on genotype (number of ...
Status of the world's fishery genetic resources
... various tilapia species14. In general, hybridization is not a good mechanism for creating stable varieties for production because the progeny may not be fertile, or when fertile the second generation (F2) yields a group of fish with diverse phenotypes. Table 2. Genetic improvement strategies15 Genet ...
... various tilapia species14. In general, hybridization is not a good mechanism for creating stable varieties for production because the progeny may not be fertile, or when fertile the second generation (F2) yields a group of fish with diverse phenotypes. Table 2. Genetic improvement strategies15 Genet ...
SELECTION
... genetic change when there are large genetic differences between the breeds chosen for the characteristics of economic importance. 2) Selection within breed/strain involves comparing animals of the same breed and mating the preferred animals to produce the next generation. The natural selection opera ...
... genetic change when there are large genetic differences between the breeds chosen for the characteristics of economic importance. 2) Selection within breed/strain involves comparing animals of the same breed and mating the preferred animals to produce the next generation. The natural selection opera ...
Directional selection
... In the case of a trait that is determined by a single gene with two alleles, there are five combinations of genotypes that nature can select: ...
... In the case of a trait that is determined by a single gene with two alleles, there are five combinations of genotypes that nature can select: ...
(lectures 9-11) - Felsenstein/Kuhner lab
... is left out of the numerator. Note also that the variance components can vary from population to population, as gene frequencies and environmental regimes vary, and can change during a selection experiment. For example, if we select a line until all alleles get fixed or lost, heritability within tha ...
... is left out of the numerator. Note also that the variance components can vary from population to population, as gene frequencies and environmental regimes vary, and can change during a selection experiment. For example, if we select a line until all alleles get fixed or lost, heritability within tha ...
COURSES FOR M.Sc. (Ag.) in GENETICS AND
... between species with same chromosome number, alien translocations - Hybrids between species with different chromosome number; Gene transfer using amphidiploids - Bridge species. Fertilization barriers in crop plants at pre-and postfertilization levels- In vitro techniques to overcome the fertilizati ...
... between species with same chromosome number, alien translocations - Hybrids between species with different chromosome number; Gene transfer using amphidiploids - Bridge species. Fertilization barriers in crop plants at pre-and postfertilization levels- In vitro techniques to overcome the fertilizati ...
Genetic Improvement and Crossbreeding in Meat Goats
... information was simply a structured record with animal names and identification numbers. Little performance information was included. Many species of farm animals, including dairy goats, now include performance information on pedigrees. In the case of meat goats, pedigrees include a record of ancest ...
... information was simply a structured record with animal names and identification numbers. Little performance information was included. Many species of farm animals, including dairy goats, now include performance information on pedigrees. In the case of meat goats, pedigrees include a record of ancest ...
DNA, Technology, and Florida Strawberries 1 - EDIS
... 1. This document is HS1287, one of a series of the Horticultural Sciences Department, UF/IFAS Extension. Original publication date November 2016. Visit the EDIS website at http://edis.ifas.ufl.edu. 2. Seonghee Lee, assistant professor, Department of Horticultural Sciences, UF/IFAS Gulf Coast Resea ...
... 1. This document is HS1287, one of a series of the Horticultural Sciences Department, UF/IFAS Extension. Original publication date November 2016. Visit the EDIS website at http://edis.ifas.ufl.edu. 2. Seonghee Lee, assistant professor, Department of Horticultural Sciences, UF/IFAS Gulf Coast Resea ...
Application to import a puppy or adult dog
... mates. Factors that will be taken into consideration may include: the number of common ancestors shared by dog and bitch in a proposed mating; how wellrepresented a dogs potential genes are in the UK already (i.e. how many direct relatives or ancestors are already included in breeding lines in the U ...
... mates. Factors that will be taken into consideration may include: the number of common ancestors shared by dog and bitch in a proposed mating; how wellrepresented a dogs potential genes are in the UK already (i.e. how many direct relatives or ancestors are already included in breeding lines in the U ...
Genomic selection: the future of marker assisted selection and animal breeding
... genes that have not been identified). The polygenes can not be ignored because they constitute a large fraction of the total genetic variance. The velo- and whizzo genetics schemes with extreme short generation intervals can not be applied here, because an important fraction of the genetic variabili ...
... genes that have not been identified). The polygenes can not be ignored because they constitute a large fraction of the total genetic variance. The velo- and whizzo genetics schemes with extreme short generation intervals can not be applied here, because an important fraction of the genetic variabili ...
Selective breeding
Selective breeding (also called artificial selection) is the process by which humans use animal breeding and plant breeding to selectively develop particular phenotypic traits (characteristics) by choosing which typically animal or plant males and females will sexually reproduce and have offspring together. Domesticated animals are known as breeds, normally bred by a professional breeder, while plants are known as varieties, cultigens, or cultivars in plants. Two purebred animals of different breeds produce a crossbreed, and crossbred plants are called hybrids.There are two approaches or types of artificial selection, or selective breeding. First is the traditional ""breeder’s approach"" in which the breeder or experimenter applies ""a known amount of selection to a single phenotypic trait"" by examining the chosen trait and choosing to breed only those that exhibit higher or ""extreme values"" of that trait. The second is called ""controlled natural selection,"" which is essentially natural selection in a controlled environment. In this, the breeder does not choose which individuals being tested ""survive or reproduce,"" as he or she could in the traditional approach. There are also ""selection experiments,"" which is a third approach and these are conducted in order to determine the ""strength of natural selection in the wild."" However, this is more often an observational approach as opposed to an experimental approach. In animal breeding, techniques such as inbreeding, linebreeding, and outcrossing are utilized. In plant breeding, similar methods are used. Charles Darwin discussed how selective breeding had been successful in producing change over time in his book, On the Origin of Species. The first chapter of the book discusses selective breeding and domestication of such animals as pigeons, cats, cattle, and dogs. Selective breeding was used by Darwin as a springboard to introduce the theory of natural selection, and to support it.The deliberate exploitation of selective breeding to produce desired results has become very common in agriculture and experimental biology.Selective breeding can be unintentional, e.g., resulting from the process of human cultivation; and it may also produce unintended – desirable or undesirable – results. For example, in some grains, an increase in seed size may have resulted from certain ploughing practices rather than from the intentional selection of larger seeds. Most likely, there has been an interdependence between natural and artificial factors that have resulted in plant domestication.