WebApr 18, 2024 · Negative heterosis of carcass traits was more common than positive heterosis, especially breast muscle mass, which was over - 40% in reciprocal progenies. Genome-wide gene expression pattern analyses of breast muscle tissues revealed that nonadditivity, including dominance and overdominace, was the major gene inheritance … WebA: Step 1 The loss of heterozygosity (LOH) can also be a cross chromosome phenomenon. The loss of…. Q: How are the principles of segregation and independent assortment …

Heterosis - an overview ScienceDirect Topics

Two domesticated chicken breeds, Cornish (meat-type chicken, C line) and Rhode Island White (egg-type chicken, R line), from Beijing Huadu Yukou Poultry Industry Co., Ltd. were employed as parents in this study to produce purebred progenies and reciprocal crosses (Fig. 1a). The C line has been selected for 42-day … See more At hatching, chicks were identified as males and females by vent sexing and then reared in separated cages under the same environment … See more To minimize mapping errors, reads that met the following parameter were removed: a) containing adaptors; b) with more than 10% unknown nucleotides; c) with more than 50% low-quality bases (Qphred ≤20). The … See more Total RNA was extracted using the TRIzol® Reagent (Invitrogen, USA) according to the manufacturer’s instructions and then dissolved in DEPC-treated water. To ensure that RNA was isolated successfully, … See more The mapped reads of each sample were assembled by StringTie (v.1.3.3b) [37]. The function of novel genes was annotated based on the Pfam database (v.31.0) [38]. Then, the gene count matrix table was generated … See more WebApr 11, 2024 · The breeder can then use these markers to select plants that have the desired genes from both parents while minimizing the negative traits. Benefits of MAS in Backcross and Heterosis Breeding. The use of MAS in backcross and heterosis breeding offers several benefits. Some of the key benefits are discussed below − maya rudolph\u0027s mother

Genetic basis of negative heterosis for growth traits in chickens ...

WebApr 27, 2024 · Notably, heterosis can occur in either “direction,” either increasing the trait value of interest relative to the parents or decreasing it. Depending on the trait in question, either may be of potential interest in crop breeding programs (for example, the so-called negative heterosis for seed size may be of value for fruit crops). WebHeterosis, or hybrid vigor, is the other factor leading to adoption of crossbreeding systems. Heterosis is simply the tendency for crossbred progeny to perform differently from the … WebApr 9, 2015 · The heterosis values for the principle traits were all significant and negative (Table 2). For example, the values for plant height and inflorescence diameter were −10.5 and −15.1, respectively. However, the significantly positive heterosis of internode length is noteworthy; its proportion relative to the ultra-high parent was quite high (72.3 %). maya rudolph will arnett