Marker-Assisted Selection for Disease Resistance in Wheat and
... Disease resistance is an important trait in public and commercial plant breeding. For each breeder, it is a critical decision for which diseases resistance selection should be performed because each additional trait reduces selection intensity for all other traits given a fixed population size or re ...
... Disease resistance is an important trait in public and commercial plant breeding. For each breeder, it is a critical decision for which diseases resistance selection should be performed because each additional trait reduces selection intensity for all other traits given a fixed population size or re ...
1 Mendel, First Geneticist
... students used in the critter simulation. People knew that pure-breeding lines of some livestock and crops could be developed to reliably produce offspring with desired characteristics. They also knew that other traits were difficult to maintain by breeding, but did not know that some traits are caus ...
... students used in the critter simulation. People knew that pure-breeding lines of some livestock and crops could be developed to reliably produce offspring with desired characteristics. They also knew that other traits were difficult to maintain by breeding, but did not know that some traits are caus ...
Impact Of The Hypermuscularity GDF8 Gene On Sheep Maternal
... status: parity, age at 1st lambing, number of lambings per year, lamb rearing modality (maternal vs artificial), number of lambs reared at the previous lambing; breed (Romanov vs Romane) and mh genotype for the INRA data set and line for the GID data set (GID introgressed vs pure Lacaune). That was ...
... status: parity, age at 1st lambing, number of lambings per year, lamb rearing modality (maternal vs artificial), number of lambs reared at the previous lambing; breed (Romanov vs Romane) and mh genotype for the INRA data set and line for the GID data set (GID introgressed vs pure Lacaune). That was ...
Correlated Characters
... In partitioning the covariance, instead of starting from individual values we start from the product of the values of the 2 characters ...
... In partitioning the covariance, instead of starting from individual values we start from the product of the values of the 2 characters ...
Lecture PDF - Carol Eunmi LEE
... appears to protect against smallpox and HIV HIV has no receptor to bind to and cannot enter the cell This allele is found in 14% of Europeans HIV can impose selective pressure for CCR5-Δ32, increasing the frequency of this allele in human populations (Sullivan et ...
... appears to protect against smallpox and HIV HIV has no receptor to bind to and cannot enter the cell This allele is found in 14% of Europeans HIV can impose selective pressure for CCR5-Δ32, increasing the frequency of this allele in human populations (Sullivan et ...
Estimating evolutionary parameters when viability selection is
... (1976) theory of missing data, which was applied in a quantitative genetic context by Im et al. (1989). The key result from these studies is that selection does not have to be explicitly considered if complete information regarding the selection criterion is contained in the data. Selection is said ...
... (1976) theory of missing data, which was applied in a quantitative genetic context by Im et al. (1989). The key result from these studies is that selection does not have to be explicitly considered if complete information regarding the selection criterion is contained in the data. Selection is said ...
Lecture PPT - Carol Eunmi LEE
... appears to protect against smallpox and HIV HIV has no receptor to bind to and cannot enter the cell This allele is found in 14% of Europeans HIV can impose selective pressure for CCR5-Δ32, increasing the frequency of this allele in human populations (Sullivan et ...
... appears to protect against smallpox and HIV HIV has no receptor to bind to and cannot enter the cell This allele is found in 14% of Europeans HIV can impose selective pressure for CCR5-Δ32, increasing the frequency of this allele in human populations (Sullivan et ...
Farm animal genetic resources: safeguarding
... goals as well as with potentially countervailing pressures. In spite of very small amounts of public money being available explicitly for this conservation, it is proving possible to achieve a leverage effect, for example by exploiting the Farm Animal Genetic Resources supplementary measures within ...
... goals as well as with potentially countervailing pressures. In spite of very small amounts of public money being available explicitly for this conservation, it is proving possible to achieve a leverage effect, for example by exploiting the Farm Animal Genetic Resources supplementary measures within ...
Advances in Environmental Biology (
... wool, and meat production. It originated and is dominant in western Iran. All Iranian native sheep breeds, except the Zel breed, are fat-tailed. The fat-tail that is regarded as an adaptive response of animals to harsh environmental conditions, serves as an energy source during migration and winter ...
... wool, and meat production. It originated and is dominant in western Iran. All Iranian native sheep breeds, except the Zel breed, are fat-tailed. The fat-tail that is regarded as an adaptive response of animals to harsh environmental conditions, serves as an energy source during migration and winter ...
Tree Improvement
... Certified tree seed: Seed collected from trees of proven genetic superiority, as defined by a certifying agency, and produced under conditions thaht assure genetic identity. These could come from trees in a seed orchard, or from superior (‘plus’) trees in natural stands with controlled pollination. ...
... Certified tree seed: Seed collected from trees of proven genetic superiority, as defined by a certifying agency, and produced under conditions thaht assure genetic identity. These could come from trees in a seed orchard, or from superior (‘plus’) trees in natural stands with controlled pollination. ...
univERsity oF copEnhAGEn
... Certified tree seed: Seed collected from trees of proven genetic superiority, as defined by a certifying agency, and produced under conditions thaht assure genetic identity. These could come from trees in a seed orchard, or from superior (‘plus’) trees in natural stands with controlled pollination. ...
... Certified tree seed: Seed collected from trees of proven genetic superiority, as defined by a certifying agency, and produced under conditions thaht assure genetic identity. These could come from trees in a seed orchard, or from superior (‘plus’) trees in natural stands with controlled pollination. ...
Diploid female gametes induced by colchicine in Oriental lilies
... triploids derived from the treated eggs. Cytological observation of F1 hybrids produced by the induced diploid-gametes showed that triploid plants were obtained as expected and its chromosome number is 2n = 3x = 36. However, chromosome number variations were also observed among the vegetative desce ...
... triploids derived from the treated eggs. Cytological observation of F1 hybrids produced by the induced diploid-gametes showed that triploid plants were obtained as expected and its chromosome number is 2n = 3x = 36. However, chromosome number variations were also observed among the vegetative desce ...
a laymans walk through basic canine genetics and
... challenge cannot be met on a national level alone but demands international initiatives. It is no use to create awareness for only a handful of breeders or even for a whole national pool of breeders if the same awareness does not exist worldwide, especially not in the context of an international exc ...
... challenge cannot be met on a national level alone but demands international initiatives. It is no use to create awareness for only a handful of breeders or even for a whole national pool of breeders if the same awareness does not exist worldwide, especially not in the context of an international exc ...
Title:Breeding Gilt Evaluation
... 10. How did you place the Yorkshire gilt class? Defend your placing. 2-3-1-4 - accept logical defense responses that support the 2-3-1-4 placing. 11. Why is it imperative for EPD’s to be negative in back fat and days to 230? The goal of the producer is to produce a hog that is lean and muscular, yet ...
... 10. How did you place the Yorkshire gilt class? Defend your placing. 2-3-1-4 - accept logical defense responses that support the 2-3-1-4 placing. 11. Why is it imperative for EPD’s to be negative in back fat and days to 230? The goal of the producer is to produce a hog that is lean and muscular, yet ...
Kap 13 Quantitative Genetics
... 2. How do we separate genetic effects from environmental effects on a quantitative trait? 3. How many loci affect quantitative traits, and how large are their effects? 4. How much genetic variation for quantitative traits is there in natural populations? 5. How is this genetic variation maintained? ...
... 2. How do we separate genetic effects from environmental effects on a quantitative trait? 3. How many loci affect quantitative traits, and how large are their effects? 4. How much genetic variation for quantitative traits is there in natural populations? 5. How is this genetic variation maintained? ...
lecture 02 - selection on the gene, genome, trait and phenotype
... Alleles or allele combinations, and the traits they produce, determine fitness of an individual: # of offspring that survive to reproduce - if you live forever but produce no offspring, your fitness = 0 Allele combinations resulting in higher fitness are passed to more offspring, and thus those alle ...
... Alleles or allele combinations, and the traits they produce, determine fitness of an individual: # of offspring that survive to reproduce - if you live forever but produce no offspring, your fitness = 0 Allele combinations resulting in higher fitness are passed to more offspring, and thus those alle ...
study on factors affecting the efficiency of marker
... different background selection methods:The genetic responses for two background traits under different background selection methods was given in figure 6: during backcross phase, the genetic responses for two background traits show slowly increase by degrees trend with the increase of backcross gene ...
... different background selection methods:The genetic responses for two background traits under different background selection methods was given in figure 6: during backcross phase, the genetic responses for two background traits show slowly increase by degrees trend with the increase of backcross gene ...
Directional Selection on a discrete trait
... appears to protect against smallpox and HIV HIV has no receptor to bind to and cannot enter the cell This allele is found in 14% of Europeans HIV can impose selective pressure for CCR5-Δ32, increasing the frequency of this allele in human populations (Sullivan et ...
... appears to protect against smallpox and HIV HIV has no receptor to bind to and cannot enter the cell This allele is found in 14% of Europeans HIV can impose selective pressure for CCR5-Δ32, increasing the frequency of this allele in human populations (Sullivan et ...
Introduction to On-farm Organic Plant Breeding
... how individual plants within a population perform. Mass selection is the most straightforward breeding method. As such, it requires minimum time, labor, and record keeping. Because of the simplicity, it can make working with large populations more practical during the breeding process. However, it d ...
... how individual plants within a population perform. Mass selection is the most straightforward breeding method. As such, it requires minimum time, labor, and record keeping. Because of the simplicity, it can make working with large populations more practical during the breeding process. However, it d ...
Recommended Breeding Policy for the LaPerm cat - Kia-Ora
... although the degree of softness may vary among individuals, however, it should not feel silky and should have a feeling of texture to it, which is sometimes compared to mohair. It should be loose, springy and light, standing away from the body. Coat density should be moderate; it should be light and ...
... although the degree of softness may vary among individuals, however, it should not feel silky and should have a feeling of texture to it, which is sometimes compared to mohair. It should be loose, springy and light, standing away from the body. Coat density should be moderate; it should be light and ...
Is the mink domesticated?
... changes associated with behaviour selection, which were related to the outlined behaviour changes, but which had never been the subject of any selection in themselves. The breeding season for instance became longer and some females even had two litters per year, an unprecedented phenomenon in foxes. ...
... changes associated with behaviour selection, which were related to the outlined behaviour changes, but which had never been the subject of any selection in themselves. The breeding season for instance became longer and some females even had two litters per year, an unprecedented phenomenon in foxes. ...
Genomic and Functional Approaches to Genetic Adaptation
... “This preservation of favorable variations and the rejection of injurious variations, I call Natural Selection” (Darwin 1859) A heritable trait that increases the chances for an organism to survive, and/or that benefits its reproduction in a given environmental context is considered an adaptive trai ...
... “This preservation of favorable variations and the rejection of injurious variations, I call Natural Selection” (Darwin 1859) A heritable trait that increases the chances for an organism to survive, and/or that benefits its reproduction in a given environmental context is considered an adaptive trai ...
Breeding Policy for the RagaMuffin Cat
... Genetic Makeup of the Breed In the RagaMuffin Breed there are two colour restriction genes, the one that you would find in the Siamese and the one you would find in the Burmese. Neither of these genes is dominant over the other. When put together this achieves a blended effect, as you would find in ...
... Genetic Makeup of the Breed In the RagaMuffin Breed there are two colour restriction genes, the one that you would find in the Siamese and the one you would find in the Burmese. Neither of these genes is dominant over the other. When put together this achieves a blended effect, as you would find in ...
Genetic Testing Required and Voluntary
... PHA (Pulmonary Hypoplasia with Anasarca): Some Dexter Cattle carry a genetic disease called PHA. This gene is recessive and produces no symptoms in an animal that inherits only one PHA gene from its parents. However, the gene will be lethal to a fetus that inherits the PHA gene from both parents. A ...
... PHA (Pulmonary Hypoplasia with Anasarca): Some Dexter Cattle carry a genetic disease called PHA. This gene is recessive and produces no symptoms in an animal that inherits only one PHA gene from its parents. However, the gene will be lethal to a fetus that inherits the PHA gene from both parents. A ...
Implementation of molecular markers for quantitative traits in
... band, is used for selection, it will be informative during backcross generations if the dominant allele (conferring band presence) is linked to the donor parent allele. If the recessive allele (conferring band absence) is linked to the donor parent allele, then all backcross progeny will either be h ...
... band, is used for selection, it will be informative during backcross generations if the dominant allele (conferring band presence) is linked to the donor parent allele. If the recessive allele (conferring band absence) is linked to the donor parent allele, then all backcross progeny will either be h ...
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.