"We're early in the backcross process," Oster says.    From Wordnik.com.  [Western Farm Press RSS Feed] Reference

Genome-wide and additional fine mapping of backcross mice, derived from C3H.    From Wordnik.com.  [Naturejobs - All Jobs] Reference

In each backcross, this QTL forms two different genotypes, QQ and Qq, or Qq and qq.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Tremendous variation was observed in the degree of endoreduplication for each backcross.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

RPS15, while the backcross with the NHP2+, rps15-1 strain yielded a viable diploid strain.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

The embryo and endosperm models for the genetic control of endosperm traits in the backcross.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

All selected polymorphisms were verified by re-sequencing DNA taken from the mice used in the backcross.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Table 1 tabulates parental cross types at the QTL, and the offspring segregation types for each backcross.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

MAT locus as evidenced by analyzing tetrads obtained from the initial backcross to rps15-1 (data not shown).    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Developing kernels from each backcross were harvested from the middle of well-filled ears at 16 days after pollination (DAP).    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Two possible QTL genotypes in each backcross, one heterozygous and the other homozygous, are symbolized by h and h̅, respectively.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Oster started a backcross program for stem rot resistance in medium grains in 2005 and that program has now progressed to backcross 4.    From Wordnik.com.  [Western Farm Press RSS Feed] Reference

Virus-like particles testes Heliothis virescens, H. subflexa backcross males derived hybridization H. virescens males X H. subflexa females.    From Wordnik.com.  [MyLinkVault Newest Links] Reference

A detailed EM algorithm is described to obtain the MLEs of the backcross-specific overall mean, the QTL position, QTL effects and residual variances.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

We have now undertaken the first genome-wide scan for additional loci modifying radiation-induced tumour multiplicity in the intestine of N2 backcross.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

In contrast, A. collina-4x and its suspected backcross plants show homeologous gene copies: sequences from the same tetraploid individual plant are placed in both diploid clades.    From Wordnik.com.  [BioMed Central - Latest articles] Reference

Two parameters were used to estimate the degree of endoreduplication in endosperm of the backcross progeny and parental inbred lines, mean ploidy and percentage of endoreduplicated nuclei.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

With the marker and phenotypic data collected for the reciprocal backcross design, our imprinting model allows for detecting and testing iQTL located in the embryo genome that affect endosperm traits.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

In this four-backcross design, the maternal QTL genotypes are Qq (backcrosses 1 and 2), QQ (backcross 3) and qq (backcross 4), whereas the offspring (zygotic) QTL genotypes are segregating in each backcross in a way as shown in.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

By analyzing DNA sequences of two single-copy nuclear genes and the genomic AFLP data, we assess the allopolyploid origin of A. collina-4x from ancestors corresponding to A. setacea-2x and A. asplenifolia-2x, and the ongoing backcross introgression between these diploid progenitor and tetraploid progeny lineages.    From Wordnik.com.  [BioMed Central - Latest articles] Reference

×F1 and P2×F1, we performed simulation studies which include several representative schemes with different imprinting degrees (none, small, mediate and large), different maternal-zygotic interaction effects (none and large), different heritabilities (0.1 and 0.4), and different sample sizes (100 and 400 for each backcross).    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

In contrast, a perfect co-segregation of CsACS2 with the M gene was obtained in a segregating population of 91 backcross plants (.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

1, y2, y3 and y4 be the phenotypic observations of the trait for backcross, F.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

| i, are expressed as the conditional probability of QTL genotype h or h̅ given the marker genotype of individual i in a backcross, and the mixture components are modelled by a normal distribution density function, fkj (yki), with means expressed as genotypic values (, σ32, σ42 for each backcross, respectively.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

2) and sample sizes for each backcross (n).    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference