Search results
Results from the WOW.Com Content Network
Purebred are those animals that have been bred-up to purebred status as a result of using full blood animals to cross with an animal of another breed. Artificial breeding via artificial insemination or embryo transfer is often used in sheep and cattle breeding to quickly expand, or improve purebred herds.
Animal breeding is a branch of animal science that addresses the evaluation (using best linear unbiased prediction and other methods) of the genetic value (estimated breeding value, EBV) of livestock. Selecting for breeding animals with superior EBV in growth rate, egg, meat, milk, or wool production, or with other desirable traits has ...
Purebred breeding aims to establish and maintain stable traits, that animals will pass to the next generation. By "breeding the best to the best," employing a certain degree of inbreeding, considerable culling, and selection for "superior" qualities, one could develop a bloodline superior in certain respects to the original base stock.
This glossary of genetics and evolutionary biology is a list of definitions of terms and concepts used in the study of genetics and evolutionary biology, as well as sub-disciplines and related fields, with an emphasis on classical genetics, quantitative genetics, population biology, phylogenetics, speciation, and systematics.
In such a test cross, if the individual being tested is heterozygous, a phenotypic ratio of 1:1:1:1 is typically observed. [7] To test Mendel’s idea, he performed complex crosses with plants that were purebred for two characteristics: seed color (yellow and green), seed shape (round and wrinkled).
A Punnett square showing a typical test cross. (green pod color is dominant over yellow for pea pods [ 1 ] in contrast to pea seeds, where yellow cotyledon color is dominant over green [ 2 ] ). Punnett squares for each combination of parents' colour vision status giving probabilities of their offsprings' status, each cell having 25% probability ...
Bryan Sykes, a molecular biologist at Oxford University, tested the new methodology in general surname research. [3] His study of the Sykes surname, published in 2000, obtained results by looking at four STR markers on the male chromosome. It pointed the way to genetics becoming a valuable assistant in the service of genealogy and history. [4]
For example, if there are 3 alleles per locus, then there would be 9 mating types, each of which can mate with 4 other mating types. [35] By multiplicative combination, it generates a vast number of mating types. For example, Schizophyllum commune, a type of fungus, has = mating types.