backcrossing वाक्य
उदाहरण वाक्य
मोबाइल
- Failure of " P . lutzii " to backcross with " P . sitchensis " ( Gordon 1988 ) contention that backcrossing with several spruce hybrids was proving much less successful than expected.
- Here, backcrossing is carried out until a desired level of recombination has occurred and genetic markers are used to detect desired recombinant chromosome substitution lines in the target region, which can be fixed by doubled haploidy.
- Prospect Rock Permaculture in Vermont has been backcrossing buartnuts with native butternuts, resulting in'butterbuarts', which will most likely bear greater resemblance to the butternut parentage, although may also be more susceptible to the canker.
- Through backcrossing, also has been used extensively to transfer individual genes such as wx ( waxy ), o2 ( opaque 2 ) and the Htl gene for resistance to the leaf blight was transferred to regular dent corn.
- The progeny-group of a harem with a dominant male, for example, may contain elements of sib-crossing, cousin crossing, and backcrossing, as well as genetic drift, especially of the " island " type.
- Congenic strains are generated in the laboratory by mating two inbred strains ( usually rats or mice ), and backcrossing the descendants 5-10 generations with one of the original strains, known as the " recipient " strain.
- Introgression refers to the gradual infiltration of germplasm of one species into that of another as a consequence of hybridization and repeated backcrossing, i . e ., the crossing of a hybrid with either of its parents ( Anderson 1949 ).
- During his period in Vienna, Jesenko commenced several studies on plant hybridisation under von Tschermak's supervision, obtaining fertile hybrids between different varieties of wheat and rye with the help of backcrossing, and studying their characteristics with reference to Mendelian principles.
- Within the wolf line, the scientists found, the dogs separate into four groups, suggesting that the wolf was domesticated on at most four separate occasions, or was maybe domesticated just once, with backcrossing between dogs and wolves occurring on three later occasions.
- :: : : : : : Dog breeds are not quite so genetically inbred as mice strains-especially not these days . Rather than strict backcrossing, dog breeding uses phenotype selectivity in mating ( which is a kind of proxy for kin mating ).
- This cultivar was produced by backcrossing two " Hibiscus " cultivars for three generations : the pollen parent was an inbred seedling of H . coccineus " .'Kopper King'first bloomed in 1987 on the Fleming brothers'property in Nebraska.
- Yeh and Arnott ( 1986 ) pointed out the difficulties of estimating accurately the degree of introgression between white and Sitka spruces; introgression may have occurred at low levels, and / or hybrid seed lots may vary in their degree of introgression in consequence of repeated backcrossing with parental species.
- :: : : : : Am I right in my understanding of the backcrossing procedure and / or my assertion that reversing the roles of the C57 and 129 mice is a sound suggestion ?-- Potato Business "'16 : 10, 25 December 2007 ( UTC)
- Returning to the example of the mildew resistant pea being crossed with a high-yielding but susceptible pea, to make the mildew resistant progeny of the cross most like the high-yielding parent, the progeny will be crossed back to that parent for several generations ( See backcrossing ).
- The " relationship " patterns include " sib crossing ", " cousin crossing " and " backcrossing " and are considered in a separate section . " Self fertilization " may be considered both from a spatial or relationship point of view.
- It resulted from a backcrossing of the F1 hybrid of its parents to " S . vulgaris " . " S . vulgaris " is native to Britain, while " S . squalidus " was introduced from Sicily in the early 18th century; therefore, " S . eboracensis " has speciated from those two species within the last 300 years.
- Hybridization followed by backcrossing has produced populations of intermediate character with respect to physiology as well as morphology, so that there is strong continuity in a cline that extends from the foothills, where " P . glauca " has been altered little by introgression, to alpine timberline, where " P . engelmannii " exists in what appears to be nearly pure form .
- If they ( the scientists involved ) had used C57BL / 6 cells in the first place, they could put those cells in the same blastocyst as before, breed with a C57BL / 6 mouse, and just like that, all the black offspring are heterozygous for the knockout and fully C57BL / 6; no backcrossing necessary .-- Potato Business "'13 : 30, 15 December 2007 ( UTC)
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