There are many subspecies for wild animals, wild plant varieties, race for pets and cultivars for "selected" plant by man. These terms are based on geographical criteria (subspecies of wolf, local breeds of domestic animals), morphological resemblance of ecological specialization (wildlife) or uses for domestic animals (TICA ragdoll breeders). Excluding domestic species, biologists today so very little use the term race for subdivisions of lower level than the species. The concept of race is mainly used for pets, for which it is the counterpart of concept of subspecies in wildlife. Among the species existing in wild and domesticated.
Taxa to rank of race do not have scientific names internationaux1 their taxonomic division is usually based on subjective criteria and practices (especially used for the commercial designation). These variations are generally very low for selected races to ensure a certain standard, which is required for example special services to satisfy optimally a purpose of use. Against by the variability can be very large between geographic races.
The term race is still used to refer to subgroups of human species formed by inherited differences in skin color and morphology (narrow eyes, for example). The word "race" is also used in Article 1. However, if no distinction is well accepted in Anglo-Saxon countries, it is strongly rejected in others, where the use in a formal setting of a racial mention is prohibited, the term "Type "or" ethnicity "is preferred.
Drafting laws of heredity based on the work of Gregor Mendel used to connect a breed with a particular genotype. To understand this relationship, it is necessary to distinguish two notions: observable characters (the individual's phenotype) and the information carried by the genome (genotype of individual).
The word "race" refers primarily domesticated species. It refers to individualized populations of same species with distinct morphological and physiological hereditary other populations, that is to say, having an individual genotype means that man has tried to maintain some long time, but that it can evolve to economic imperatives or fashion.
These subdivisions are quite risky and complex; it is not uncommon to see them challenged on the basis of greater or lesser importance given to a discriminating character. In addition, the interfertility for cross breeding between the two subspecies, the choice to classify an individual in a particular group can be completely arbitrary.
They therefore can not be unambiguously defined in case of perfect isolation of two subspecies: geographically, for example. This explains the reluctance of biologists deal with the definition of "races" that still remains a matter of debate among scientists. In recent years, particularly since the Convention on Biological Diversity in Rio, FAO, OIE, the UN, NGOs and some international scientific bodies (IUBS, IUCN ...) are concerned about the accelerated disappearance of domesticated species . Dropoff window
It usually has the original condition, animal spawners to be in this race. This condition is not required for rearing ornamental chickens. When this condition is applied, the breed is genetically isolated, though this isolation may be recent, and sometimes provides for regular or special derogations. When it comes to a race of production, these criteria are usually combined with the performance, which is crucial general. In previous cases, race is a set of animals objectively homogeneous appearance and origin, though it is added development objectives of this homogeneity in one case, and performance improvement or various characters in other.
Taxa to rank of race do not have scientific names internationaux1 their taxonomic division is usually based on subjective criteria and practices (especially used for the commercial designation). These variations are generally very low for selected races to ensure a certain standard, which is required for example special services to satisfy optimally a purpose of use. Against by the variability can be very large between geographic races.
The term race is still used to refer to subgroups of human species formed by inherited differences in skin color and morphology (narrow eyes, for example). The word "race" is also used in Article 1. However, if no distinction is well accepted in Anglo-Saxon countries, it is strongly rejected in others, where the use in a formal setting of a racial mention is prohibited, the term "Type "or" ethnicity "is preferred.
Drafting laws of heredity based on the work of Gregor Mendel used to connect a breed with a particular genotype. To understand this relationship, it is necessary to distinguish two notions: observable characters (the individual's phenotype) and the information carried by the genome (genotype of individual).
The word "race" refers primarily domesticated species. It refers to individualized populations of same species with distinct morphological and physiological hereditary other populations, that is to say, having an individual genotype means that man has tried to maintain some long time, but that it can evolve to economic imperatives or fashion.
These subdivisions are quite risky and complex; it is not uncommon to see them challenged on the basis of greater or lesser importance given to a discriminating character. In addition, the interfertility for cross breeding between the two subspecies, the choice to classify an individual in a particular group can be completely arbitrary.
They therefore can not be unambiguously defined in case of perfect isolation of two subspecies: geographically, for example. This explains the reluctance of biologists deal with the definition of "races" that still remains a matter of debate among scientists. In recent years, particularly since the Convention on Biological Diversity in Rio, FAO, OIE, the UN, NGOs and some international scientific bodies (IUBS, IUCN ...) are concerned about the accelerated disappearance of domesticated species . Dropoff window
It usually has the original condition, animal spawners to be in this race. This condition is not required for rearing ornamental chickens. When this condition is applied, the breed is genetically isolated, though this isolation may be recent, and sometimes provides for regular or special derogations. When it comes to a race of production, these criteria are usually combined with the performance, which is crucial general. In previous cases, race is a set of animals objectively homogeneous appearance and origin, though it is added development objectives of this homogeneity in one case, and performance improvement or various characters in other.
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