Sentences with phrase «of backcrosses»

The breeders hoped that a small proportion of each backcrossed generation would retain the high blight resistance of the Chinese trees while looking and acting more American.

This may facilitate subsequent generations of backcrossing.

We can not rule out the influence of other SNPs fixed in the mutant populations on seemingly unrelated phenotypes, such as the elongated panicle phenotype displayed by bsl1 - 2 (Figure 1B), since several rounds of backcrossing were not performed.

The technical evaluation of projects may require the provision of additional data such as information on the genetic modification of your mutant mouse line if applicable (e.g. affected gene, MGI ID of the gene, type of mutation, ES - cell line used, genetic background (e.g. number of backcross generations), safety level, description of DNA modification, vector, remaining non-recipient DNA, donor organism), mutant phenotype (s), special housing or care requirements, current sanitary status, and intellectual property rights (who generated the mouse line, owner of the mouse line)

In this study, we focused on two geographically distinct ivermectin resistant strains of H. contortus and two lines generated by multiple rounds of backcrossing between susceptible and resistant parents, with ivermectin selection.

All mice were maintained after five generations of backcrossing to C57BL / 6J (B6) and housed under specific pathogen - free conditions in accordance with institutional guidelines.

Eventually it would be possible to mate two animals that are both heterozygous for the desired allele and produce homozygous progeny, with very little change in genetic composition (B) After five generations of backcrossing to the desired breed, the proportion of the genotype contributed by this breed is 96.9 %, while by ten generations it is 99.9 %.

Not exact matches

· Molecular and Functional Characterization of GR2 - R1 Event Based Backcross Derived Lines of Golden Rice in the Genetic Background of a Mega Rice Variety Swarna — http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0169600

A new study now finds, that backcrossing of the genetically engineered Golden Rice, with the Indian mega rice variety Swarna, leads to morphological changes such as pale green leaves, a reduced plant height and a drastic reduction in yield.

The resulting backcrossed plants and information about their genomes, «shows a way forward for improving chickpeas and many other crops too,» says von Wettberg, a professor in UVM's Department of Plant and Soil Science.

Authors should fully describe the source of their animals and number of times backcrosses were performed

A new study published this week in The Auk: Ornithological Advances shows that appearance alone is not enough to identify these hybrid zone birds: there is no single, intermediate «phenotype» or physical appearance common to all of the first - generation hybrids found, and birds from further backcrossed generations were often indistinguishable from the parent species.

Some closely related species interbreed where their ranges overlap, producing hybrid offspring that can even backcross with either parent species, until a whole population of mixed - species birds forms in the area and creates what's known as a «hybrid zone.»

Likewise, previously observed increases in fruit fly lifespan associated with overexpression of dSir2, the equivalent to sir - 2.1 in flies, disappeared when Gems and colleagues backcrossed the modified flies with ordinary ones.

This process — known as backcrossing — helps to remove the influence of any other genetic differences.

I was able to establish a transgenic line from one of these founders (F66), and I backcrossed this line extensively to C57 BL / 6 mice for subsequent analysis.

Some closely related species interbreed where their ranges overlap, producing hybrid offspring that can backcross with either parent species, until a whole population of mixed - species birds forms in the area and creates what's known as a «hybrid zone.»

Each of these four transgenic lines was backcrossed at least 6 times to C57 BL / 6 mice prior to analysis in order to control for genetic background effects.

• Speed congenics Traditional backcrossing requires a minimum of 10 generations, up to three years to complete, and uses five times the number of animals.

Of note, Dr. Warden's lab reports that, at least once during backcrossing, a heterozygous female was bred to a C57BL / 6J inbred male (thus the Y chromosome of the congenic strain is of C57BL / 6J originOf note, Dr. Warden's lab reports that, at least once during backcrossing, a heterozygous female was bred to a C57BL / 6J inbred male (thus the Y chromosome of the congenic strain is of C57BL / 6J originof the congenic strain is of C57BL / 6J originof C57BL / 6J origin).

Critical assessment of incoming strains — all submissions require detailed information about method of genetic manipulation, genotype and genotyping procedures, genetic background (e.g. source of strain and ES cell used in development, number of background generations and backcross parent strain), and reproducible phenotype.

(8) Imputation of these results specifically to the animals» age - related, low - BubR1 - driven rise in p16Ink4a - expressing senescent cells was, however, limited: limited by the very nature of so - called «accelerated aging» models such as BubR1H / H, (9) and limited by the lifelong, global absence of p16Ink4a expression in the backcrossed mice.

This permits movement of genes involved in phenotypic differences between the species by backcrossing [13]--[15].

One intriguing bit of work that Dr. Ley described was on the «Mouse APL» project, a knock - in mouse with the PML - RARA gene fusion backcrossed 10 + generations to CBL / BL6 mice.

To positional clone this major sex - specific wing QTL and to more precisely describe its phenotypic effects we (a) reduced the size of the introgressed sequence flanking the ws1 locus to a 40kb segment (see fine - scale mapping and cloning below) and (b) backcrossed the introgressed ws1g segment into a standard N. vitripennis strain (AsymCX) genetic background for > 10 generations.

Stock No. 005252 is an alternative strain, with a virtually identical genetic background except that it is wild - type for Pde6b, the result of continuous backcrossing to (C57BL / 6JEiJ x C3Sn.BLiA - Pde6b + / DnJ) F1 / J.

Each of these strains has been backcrossed a limited number of times (Materials and Methods).

which originated from the 1955 breeding of a carpathian wolf and German shepard, and subsequently backcrossed again to wolves on three additional occasions within a 25 year period.

The diverse genetic origin of the domestic dog has likely involved multiple gray wolf populations from breed inception that were even at later times backcrossed with wolves throughout history.

Some breeders have backcrossed a Bernedoodle with a Bernese, which results in a dog with more of the Bernese traits.

Each F2b dog is the offset of an F1 parent and an F1 backcrossed (F1b) parent.

When a breed population carries a high frequency for a known detrimental allele at a specific genetic locus, it may be possible to crossbreed with an animal free of the detrimental allele and then backcross to the original lineage, monitoring the presence of the desired allele using genetic testing.