Best Practices for Efficient Mouse Colony Management
... Choose breeders carefully o Avoid selection pressure Replace breeders on a rotation (monthly) o Mixed-age colony breeds more consistently o Requires having young breeders available Replace non-productive breeders ASAP (60-90 days) Collect your own breeding statistics o Evaluate regularly Breeding & ...
... Choose breeders carefully o Avoid selection pressure Replace breeders on a rotation (monthly) o Mixed-age colony breeds more consistently o Requires having young breeders available Replace non-productive breeders ASAP (60-90 days) Collect your own breeding statistics o Evaluate regularly Breeding & ...
Defining Cooperative breeding
... • Rate of transition was over twice as high for ancestors with low promiscuity • Cooperative breeding evolved 33 times and was lost 20 times. ...
... • Rate of transition was over twice as high for ancestors with low promiscuity • Cooperative breeding evolved 33 times and was lost 20 times. ...
Standards Addressed
... Next, have students choose traits they are interested in measuring. They can break up into small groups, with each group measuring a different trait. If there is time, they should come up with a hypothesis about how different extremes of their trait might be adaptive (e.g., “Hairy leaves might be re ...
... Next, have students choose traits they are interested in measuring. They can break up into small groups, with each group measuring a different trait. If there is time, they should come up with a hypothesis about how different extremes of their trait might be adaptive (e.g., “Hairy leaves might be re ...
Activity 4: Being Selective
... organisms are intentionally bred for specific traits. Artificial selection has been practiced for years by breeders, and farmers. For example, the picture to the right shows a purebred Arabian horse. These horses have been bred for centuries for their stamina and intelligence. Artificial selection h ...
... organisms are intentionally bred for specific traits. Artificial selection has been practiced for years by breeders, and farmers. For example, the picture to the right shows a purebred Arabian horse. These horses have been bred for centuries for their stamina and intelligence. Artificial selection h ...
Nov14_05
... Genetically variable characters can be altered by selection. The response to selection is proportional to the amount of genetic variation in the character. ...
... Genetically variable characters can be altered by selection. The response to selection is proportional to the amount of genetic variation in the character. ...
Artificial insemination e- learning acvtivty - Teachnet UK-home
... how semen is collected,stored and finally inserted into a cow during artificial insemination. 2. List the advantages of artificial selection over natural breeding. Use the information provided in the previous slides as a starting point and then supplement from your own research. Then use MSN Messeng ...
... how semen is collected,stored and finally inserted into a cow during artificial insemination. 2. List the advantages of artificial selection over natural breeding. Use the information provided in the previous slides as a starting point and then supplement from your own research. Then use MSN Messeng ...
Distinguished Dairy - National Dairy Shrine
... B How do you raise your heifers? What is your goal for age at first calving? ...
... B How do you raise your heifers? What is your goal for age at first calving? ...
Response_To_Selection_RBP
... Proportion of total phenotypic variance attributable to additive genetic variance Describes the extent to which offspring resemble their parents ...
... Proportion of total phenotypic variance attributable to additive genetic variance Describes the extent to which offspring resemble their parents ...
myotonia - New Forest Pony Breeding and Cattle Society
... Action taken to date by the New Forest Pony Breeding and Cattle Society The Society vets spent the early part of 2012 making direct contact with the researchers and quickly established the seriousness of the situation. The Dutch published the first list of stallion test results in May 2012. It was ...
... Action taken to date by the New Forest Pony Breeding and Cattle Society The Society vets spent the early part of 2012 making direct contact with the researchers and quickly established the seriousness of the situation. The Dutch published the first list of stallion test results in May 2012. It was ...
design and optimisation of animal breeding programmes
... Natural selection is the great evolutionary force that fuels genetic change in all living organisms. We commonly think of natural selection as affecting wild animals and plants, but in fact it affects both the wild and domestic species. All animals with lethal genetic defects, for example, are natur ...
... Natural selection is the great evolutionary force that fuels genetic change in all living organisms. We commonly think of natural selection as affecting wild animals and plants, but in fact it affects both the wild and domestic species. All animals with lethal genetic defects, for example, are natur ...
A Farmer`s Challenge to breed to the Greatest of Grapes Ms
... Students will demonstrate the ability to correctly set up and carry out punnett squares to determine the probabilities of different genotypes and phenotypes occurring and different traits being passed on from generation to generation. Students will describe how both genetic factors and environmental ...
... Students will demonstrate the ability to correctly set up and carry out punnett squares to determine the probabilities of different genotypes and phenotypes occurring and different traits being passed on from generation to generation. Students will describe how both genetic factors and environmental ...
Science and the Bible 1
... stands the striped branch at their water troughs when they come to drink. He then ensures that mating is with the strongest animals. In this way he produces strong black lambs and striped goats - which become his. ...
... stands the striped branch at their water troughs when they come to drink. He then ensures that mating is with the strongest animals. In this way he produces strong black lambs and striped goats - which become his. ...
Notes on Evolution, Natural Selection, and the Evolution of Primates
... In isolated populations Migrating indivs. start breeding Immigrants can add new alleles Not necessarily random ...
... In isolated populations Migrating indivs. start breeding Immigrants can add new alleles Not necessarily random ...
Evolution and Natural Selection
... caused by the environment is not heritable, so it is not subject to natural selection. However, the ability of organisms to develop differently in different environments can be genetic. This means organisms can evolve to be flexible. Plants are a good example of this. The number of leaves, growth pa ...
... caused by the environment is not heritable, so it is not subject to natural selection. However, the ability of organisms to develop differently in different environments can be genetic. This means organisms can evolve to be flexible. Plants are a good example of this. The number of leaves, growth pa ...
Evolution Notes Part 2 - Mercer Island School District
... Eliminates average individuals, but favors individuals at either extreme of the spectrum of variation. Results in a __________ distribution, with fewer of the average form and more of the extremes. ...
... Eliminates average individuals, but favors individuals at either extreme of the spectrum of variation. Results in a __________ distribution, with fewer of the average form and more of the extremes. ...
3.7 B - NCEA on TKI
... that would have a far greater effect on non-target insects within the ecosystem. In this example, transgenesis is much more efficient than selective breeding because: ...
... that would have a far greater effect on non-target insects within the ecosystem. In this example, transgenesis is much more efficient than selective breeding because: ...
Selection Purpose change over a period of several generations the
... change in the phenotype. Results in a fairly constant mean possibly somewhat reduced variance for a trait from one generation to the next. It is done by selecting those individuals for the trait that are near the average for the trait. It may occur with or without knowledge or intent of the breeder. ...
... change in the phenotype. Results in a fairly constant mean possibly somewhat reduced variance for a trait from one generation to the next. It is done by selecting those individuals for the trait that are near the average for the trait. It may occur with or without knowledge or intent of the breeder. ...
File - Siegel Science
... Farmers realized thousands of years ago that if you only breed parent plants & animals that have the best characteristics you could produced offspring that also had those favorable characteristics. This practice is referred to as selective breeding…sound familiar? Selective breeding practices have l ...
... Farmers realized thousands of years ago that if you only breed parent plants & animals that have the best characteristics you could produced offspring that also had those favorable characteristics. This practice is referred to as selective breeding…sound familiar? Selective breeding practices have l ...
Not So Different After All: A Comparison of Methods for Detecting
... Selective pressure to stay the same ...
... Selective pressure to stay the same ...
Preface to the Special Issue 52 (3) - Wageningen UR E-depot
... 2 was illustrated by Roel Hoekstra in his contribution, entitled “Exploring the natural biodiversity of potato (and wheat) for disease resistance”. Ana Carrasco informed the audience about the progress relating to objective 3 in her contribution on markerassisted breeding for disease resistance. Fin ...
... 2 was illustrated by Roel Hoekstra in his contribution, entitled “Exploring the natural biodiversity of potato (and wheat) for disease resistance”. Ana Carrasco informed the audience about the progress relating to objective 3 in her contribution on markerassisted breeding for disease resistance. Fin ...
GRDC project “Interspecific hybridisation of lupins”
... luteus and L. mutabilis) would help to improve an individual species more rapidly. For example a priority is to transfer the seed quality, the brown spot and pleiochaeta root rot tolerance traits from L. luteus to L. angustifolius. Transferring anthracnose resistance, metribuzin tolerance, wide adap ...
... luteus and L. mutabilis) would help to improve an individual species more rapidly. For example a priority is to transfer the seed quality, the brown spot and pleiochaeta root rot tolerance traits from L. luteus to L. angustifolius. Transferring anthracnose resistance, metribuzin tolerance, wide adap ...
Question In the last 100 years… What is Feed Efficiency?
... Use genomics for breeding and management decisions • Selective mating of animals based on the genes they actually possess • Manage animals more individually, based on their genetic potential – For example, if you have a cow whose GPTA shows her to be higher for Somatic Cell Score than her parent ...
... Use genomics for breeding and management decisions • Selective mating of animals based on the genes they actually possess • Manage animals more individually, based on their genetic potential – For example, if you have a cow whose GPTA shows her to be higher for Somatic Cell Score than her parent ...
Lecture 9
... Mutations are heritable changes in the phenotypes of organisms. These changes are the results of chemical changes at the level of genes. Such changes are capable of bringing about new and heritable character variations in crop plants and such variations can be selected and used for the establishment ...
... Mutations are heritable changes in the phenotypes of organisms. These changes are the results of chemical changes at the level of genes. Such changes are capable of bringing about new and heritable character variations in crop plants and such variations can be selected and used for the establishment ...
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.