【摘 要】
：
一、群体组成和遗传平衡自然的随机交配群体(如玉米)都是异质的,每一性状一般都有不同的基因型。群体的某一性状,由那些基因型和怎样的比率构成,叫做遗传组成(genetic const
论文部分内容阅读
一、群体组成和遗传平衡自然的随机交配群体(如玉米)都是异质的,每一性状一般都有不同的基因型。群体的某一性状,由那些基因型和怎样的比率构成,叫做遗传组成(genetic constitutjon)。以一对等位基因A-α为例,设基因型AA、Aα和αα在群体中的所占比率依次为P、H和Q,则其遗传组成Z可记为:
First, population composition and genetic balance Natural mating population (such as corn) are heterogeneous, each trait generally has a different genotype. A group of traits, by those genotypes and what kind of ratio, called genetic constituencies (genetic constituton). Taking a pair of alleles A-α as an example, assuming that the genotypes AA, Aα and αα occupy the groups P, H and Q in turn, the genetic composition Z can be written as:
其他文献
Whilst aging is well recognized to be the most significant risk factor for the development of atrial fibrillation (AF),AF also affects young person in whom it i
The purpose of this study is to distinguish respiratory syncytial virus (RSV) infection and immunology between immunocompetent and immunocompromised murine and
Background Data on retrograde recanalization of epicardial collateral channels in patients with chronic total occlusion (CTO) undergoing percutaneous coronary i
据报道,我国已发现有216种真菌具抗肿瘤作用。子囊菌5个科6个属共有6个种,半知菌1个种,绝大多数是担子菌,有27个科74个属共209种,其中可供食用的有60种以上。近数十年来,关
To explore the feasibility,necessity,and security of transcatheter closure of patent ductus arteriosus (PDA) in infants.Methods There were 230 infants with PDA.
Objectives Previous studies demonstrated that angiotensin receptor antagonists had effects on some potassium channels in guinea pig myocytes and cloned channels
本试验以目前国内推广面积大、品质优良、食味口感佳的糯玉米品种-中糯1号为材料,采用大田试验和室内品质分析以及鲜穗蒸煮品尝相结合的技术路线,研究了4个氮肥水平和4个钾肥水平对中糯1号鲜食期籽粒灌浆进程中,各品质成分动态变化影响以及对最适采收期和食味品质的影响,结果表明: 1.在本试验设计的4个氮肥水平下,N_3处理籽粒可溶性糖、支链淀粉和游离氨基酸含量最高,球蛋白含量也比较高且鲜穗蒸煮品尝口感
本试验论述了不同地区的青蒿(Artemisia annua)种子以及不同播期、不同生态型、不同取样器官对青蒿素含量的影响。
This study discussed the effects of Artemisia annua s
Background It remains controversial whether intensive control of glucose is required for pediatric hyperglycemia and no consensus has been reached on the thresh
Rupture of descending thoracic aorta is a rare but lethal disease.Compared with open surgery,thoracic endovascular aortic repair (TEVAR) becomes a less invasive