The term genotype refers to the genetic structure of a cell, an organism, or an individual. A common application of this term is in the case of the specific allele makeup of the individual, usually with the reference to a specific characteristic taken under consideration. In the human CFTR gene, which is responsible for encoding a protein that transports chloride ions across the cell membranes can be dominant (which means that it is the normal version of the gene) or recessive (which means that it is the mutated version of the gene). Individuals that have two recessive alleles of the human CFTR gene will be diagnosed with cystic fibrosis.
Genotype is closely related to the genomic sequence, but there are subtle differences between the two. The term genomic sequence refers to the absolute measure of base composition of an individual, or a representative of a specific species or group. The term genotype, on the other hand, refers to the measurement of an individual organism differs within a group of other individuals or a species.
The difference between genotype and phenotype is often encountered in the study of family patterns for particular hereditary diseases or conditions, such as in the case of hemophilia. There are two alleles for any given genes, especially in humans and most animals. These alleles can be of the same variety (homozygous) or of different ones (heterozygous) depending on the individual of interest. With a dominant allele, the offspring can be expected to inherit the trait in question, regardless of the second allele. In the case of a recessive allele, such as in the case of albinism, the phenotype depends on the other allele.
This category contains scientific information on genotype, the genetic structure of a cell, an organism, or an individual.
Veronesi F., 1980: Preliminary study for obtaining a medicago sativa variety to be used for the dehydration and adapted to central italy. Genetica Agraria4: 355-374 From 1971-1975 3 M. sativa Italian varieties and 4 M. sativa umbrian ecotypes were compared in an agronomical trial. The types are characterized by different growth rhythms and different yield [...]
Arcioni S., 1981: Preliminary results of 1 cycle of selection for green matter yield in medicago sativa. Rivista Di Agronomia: 45-50 During 1976/1977 the 8 most productive plants among 400 genotypes of the ecotype Casalina were selected. These plants were cloned and in 1978 were intercrossed. In spring 1979, 2 trials, as spaced plants and [...]
Zobel R.W., 1988: Predictive and postdictive success of statistical analyses of yield trails. Theoretical & Applied Genetics: 1-10 The accuracy of a yield trial can be increased by improved experimental techniques, more replicates, or more efficient statistical analyses. The third option involves nominal fixed costs, and is therefore very attractive. The statistical analysis recommended here [...]
Yonezawa K., 1983: Practical implication of improving the precision of genotype assessment in selection a theory. Euphytica: 543-556 A logical basis for evaluating the practical merit of improving genotype assessment method was defined. Numerical computations indicated that genotype assessment with a high precision is not always useful, and improvement of 1 process composing the assessing [...]
Seibold K.H., 1981: Possibilities for selection of low 5 alkyl resorcinol lines in rye secale cereale breeding using an improved selection procedure. Zeitschrift Fuer Pflanzenzuechtung: 177-191 For the development of rye lines low in 5-Ar content within a cross breeding program with ‘Kustro’, ‘Perolo’, a short-straw line Mi, and a mutant M540 with extremely low [...]
Grechanyi, G. V.; Korzun, V. M.; Safina, I. Kh, 1986: Population density as a regulation factor of genetic structure and quantity of animal populations v. effects of migration behavior on changes in genetic structure of drosophila melanogaster populations for productivity. Genetika 22(8): 2100-2106 A study of migration behavoiur in the system of cage model populations [...]
Wilcox J.R., 1986: Pollinator density effects on frequency and randomness of male sterile soybean glycine max pollinations. Crop Science: 96-99 Genetic male-sterility has been used to facilitate intermating in the recombination phase of soybean breeding programs. Insect vectors of pollen do not move at random in these intermating blocks and this may restrict random pollination. [...]
Duke C.E., 1979: Plasma concentrations of prolactin during the reproductive cycle of the domestic turkey meleagris gallopavo. Poultry Science: 963-970 Plasma concentrations of prolactin were measured by a heterologous double antibody radioimmunoassay during the reproductive cycle of Large White turkey hens. In all hens, there was a large increase in the plasma concentration of Prl [...]
Boe A.A., 1986: Plant regeneration in callus cultures derived from young inflorescences of little bluestem schizachyrium scoparium. Crop Science: 827-829 Little Bluestem, a warm-season perennial grass, is valuable for range and conservation plantings in the Great Plains. The objectives of this study were to develop rapid vegetative propagation techniques to facilitate selection of superior genotypes [...]
Thomas T.A., 1981: Phytate and total phosphorus content of field beans vicia faba. Journal Of The Science Of Food & Agriculture: 187-192 Considerable variation was found in the phytate and total P contents of varieties, selections and genotypes of field beans (faba L.) The phytate P content of seeds taken from single plants of the [...]