The term heredity refers to the passing of traits from parent (or ancestors) to the offspring. The process of heredity involves an offspring cell or organism, which acquires or becomes predisposed to certain characteristics of its parent cell or organism. It is through heredity that variations exhibited by individuals and accumulate and therefore cause some species to evolve.
The study of heredity in the field of biology is called genetics, which includes the subfield epigenetics. Genetics as a discipline of biology is focused not only on heredity, but also on genes and the variation in all kinds of living organisms. Genetics also deals with the molecular structure and function of genes, as well as the behavior of the genes in the context of a cell or an organism. Patterns of inheritance from parent to offspring and gene distribution are also of interest for geneticists.
Eye color in humans is a typical example of an inherited characteristic. A person can inherit his or her brown eyes from one of the parents. However, for a person to have blue eyes, both parents must possess the blue-eyed gene. Genes control these inherited traits; the complete set of genes found within an organism’s genome is called its genotype. On the other hand, the term phenotype refers to the complete set of observable traits of the structure, as well as the behave of a particular organism.
Many traits in living organisms arise from the interaction of its genotype with the environment, and this is the reason why many aspects of an organism’s phenotype is not directly inheritable. However, heritable traits are known to be passed from generation to generation through DNA, the molecule that is responsible for encoding genetic information.
This category contains scientific information on heredity, which refers to the passing of traits from parent (or ancestors) to the offspring.
Lane, M. D.; Lawrence, M. J., 1995: Genetics of seed dormancy in Papaver rhoeas. Heredity. 75(1): 84-91 Seed dormancy in a cross between wild Papaver rhoeas and its ‘Shirley’ cultivar appeared to be controlled by genes that displayed additive effects, dominance in the direction of low dormancy and non-allelic interaction of the duplicate type; in [...]
“Bisset, S. A.; Morris, C. A.; Squire, D. R.; Hickey, S. M.; Wheeler, M., 1994: Genetics of resilience to nematode parasites in Romney sheep. New Zealand Journal Of Agricultural Research. 37(4): 521-534 7533 Romney lambs, born in 1991 on six farms in the southern North Island of New Zealand, were studied as part of an [...]
“Lavi, Uri; Lahav, Emanuel; Degani, Chemda; Gazit, Shmuel, 1992: The genetics of the juvenile phase in avocado and its application for breeding. Journal Of The American Society For Horticultural Science. 117(6): 981-984 Avocado (Persea americana Mill.) progeny that originated from 11 crosses (both self-pollination and crosses between cultivars) were evaluated for the length of their [...]
Sellier, P., 1994: The future role of molecular genetics in the control of meat production and meat quality. Meat Science. 36(1-2): 29-44 Current applications of quantitative genetics for genetic improvement of farm animals rely on sophisticated statistical procedures applied to fairly simple genetic models and have been effective in producing large cumulative genetic changes in [...]
Stewart, Sc, 1994: Simultaneous estimation of pollen contamination and pollen fertilities of individual trees in conifer seed orchards using multilocus genetic data. Theoretical and applied genetics 88(5): 593-596 Seed orchards of forest trees are established to produce genetically-improved seed for reforestation. Genetic efficiency requires seed orchards to be (1) reproductively isolated from surrounding trees, (2) [...]
Phillips, R. L., 1993: Plant genetics: out with the old, in with the new?. American Journal of Clinical Nutrition 58(2, supplement): 259S-263S Plant breeding represents an evolving technology based largely on genetic principles. Approximately one-half of the increased yields of major crop plants can be attributed to the genetic improvement of the crop. Although the [...]
Huber, D. A.; White, T. L.; Littell, R. C.; Hodge, G. R., 1992: Ordinary least squares estimation of general and specific combining abilities from half-diallel mating designs. Silvae Genetica. 41(4-5): 263-273 This paper presents a matrix algebra approach to the solution of ordinary least squares (Ols) equations for estimation of genetic parameters as fixed effects [...]
Patterson, Dj; Perry, Rc; Kiracofe, Gh; Bellows, Ra; Staigmiller, Rb; Corah, Lr, 1992: Management considerations in heifer development and puberty. Journal of animal science 70(12): 4018-4035 Management of replacement beef heifers should focus on factors that enhance physiological processes that promote puberty. Age at puberty is important as a production trait when heifers are bred [...]
Loveless, M. D., 1992: Isozyme variation in tropical trees: patterns of genetic organization. New Forests 6(1-4): 67-94 Tropical forests have long been of interest to biologists because of their high species diversity and their complicated patterns of community organization. The traditional notion of the rain forest as an ancient, unvarying archive of species has been [...]
Torres, A. M.; Moreno, M. T.; Cubero, J. I., 1993: Genetics of six components of autofertility in Vicia faba. Plant Breeding. 110(3): 220-228 The inheritance of six components of autofertility was studied in faba beans in two consecutive years (1989 and 1990) by analysing parents, F1 and segregating generations of 14 crosses between preselected pure [...]