backcrossing वाक्य

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)