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.
Gao Z., 1982: Discovery and determination of a dominant male sterile gene and its importance in genetics and wheat triticum aestivum breeding. Scientia Sinica Series B (chemical Biological Agricultural Medical & Earth Sciences): 508-516 A male-sterile plant, a spontaneous mutant, was found in Chinese wheat. The dominant male-sterile gene was designated as Ta A breeding [...]
Kursakov, G. A., 1980: Development of research in genetics and breeding of fruit and berry plants in the i. v. michurin central laboratory michurinsk ussr. Sel’skokhozyaistvennaya Biologiya 15(5): 652-660 The analysis of the prominent naturalist Michurin’s ideas and methods development is given. The results of investigations in interspecific and distant hybridization, to cytogenetics, mutagenesis, polyploidy [...]
Phang V.P.E., 1985: Culture of the guppy poecilia reticulata in singapore. Aquaculture: 49-64 Singapore is known internationally as a breeding centre for the guppy, P. reticulata. About 30 domesticated colour pattern and tail shape varieties are reared, mainly for export. The culture of these varieties at two rural and eight resettled farms is described. All [...]
Zarnecki A., 1983: Computer programs for teaching animal breeding and genetics. Livestock Production Science: 589-600 The results of a survey of computer programs used in teaching animal breeding and genetics are reported. An inventory of programs is presented and the experiences of users is summarized. The value of computer teaching aids is discussed and a [...]
Yadav H.P., 1985: Combining ability analysis for yield components of pearl millet pennisetum typhoides in different environments. Indian Journal Of Genetics & Plant Breeding: 70-74 Genetics of yield components was investigated from combining ability analysis of a 12.times. 12 diallel under a range of environmental conditions in pearl millet (Pennisetum typhoides (B.) S. and H.) [...]
Johnson C., 1984: Color morph genetics in the terrestrial isopods armadillidium nasatum and porcellionides virgatus. Canadian Journal Of Genetics & Cytology: 167-173 The inheritance of color morphs is reported in 2 terrestrial isopods, A. nasatum and P. virgatus. Six and 3 pure breeding color morphs were developed in the isopods. A. nasatum and P. virgatus, [...]
Page, R. E. Jr ; Laidlaw, H. H-Jr, 1982: Closed population honey bee apis mellifera breeding population genetics of sex determination. Journal of Apicultural Research 21(1): 30-37 The genetic mechanism of sex determination in honeybees is the greatest deterrent to successful bee breeding, because of the production of nonviable diploid drones with inbreeding. Sex determination, [...]
Fredeen H.T., 1984: Changes in the characteristics of commercial hog carcasses in canada. Canadian Journal Of Animal Science: 569-586 Over the 14 yr period 1979-1982 the proportion of commercial hog carcasses indexing above index 100 in the Canadian slaughter increased from 42.5 to 78.0 based on the 1968 index grid, and average fat (shoulder plus [...]
Rubenstein D.A., 1983: Canine biliary carcinoma epidemiological comparisons with man. Journal Of Comparative Pathology: 99-108 A retrospective study of abstracted data representing 1.1 million hospital examinations of dogs at veterinary university teaching facilities identified 77 with bile duct carcinoma. Using the hospital population, based on patient years at risk, as the expected frequency of particular [...]
Bessei W., 1980: Cage keeping of layers ethological view of animal protection. Zuechtungskunde: 469-474 Though the behavior of poultry was studied more than that of other farm animals, many gaps in knowledge remain. Lorenz’s concept of chicken behavior focused only on the mechanical components of animal behavior. This theory indicates that animals suffer when they [...]