Mendel's laws

Mendel's laws
Mendel's laws
n.
the four principles of hereditary phenomena discovered and formulated by Gregor Mendel: 1) the law of independent unit characters, which states that characters, as height, color, etc., are inherited separately as units 2) the law of segregation, which states that body cells and primordial germ cells contain pairs of such unit characters and that when gametes are produced, each gamete receives only one member of each such pair 3) the law of dominance, which states that in every individual there is a pair of determining factors (see GENE) for each unit character, one from each parent; if these factors are different ( heterozygous), one character (the dominant) appears in the organism, the other (the recessive) being latent; the recessive character can appear in the organism only when the dominant is absent; hence in all crossbred generations, unit characters are shown in varying combinations, each appearing in a definite proportion of the total number of offspring 4) the law of independent assortment, which states that any one pair of characters is inherited independently, notwithstanding the simultaneous transmission of other traits: this principle has been modified by the discovery of linkage and pleiotropy

* * *


Universalium. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • Mendel's laws — n. the four principles of hereditary phenomena discovered and formulated by Gregor Mendel: 1) the law of independent unit characters, which states that characters, as height, color, etc., are inherited separately as units 2) the law of… …   English World dictionary

  • Mendel’s laws — Mendel’s laws. См. законы Менделя. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Mendel’s laws — Mendelio dėsniai statusas T sritis augalininkystė apibrėžtis Augalų hibridų požymių paveldėjimo dėsniai, suformuluoti G. Mendelio 1865 m. atitikmenys: angl. Mendel’s laws rus. законы Менделя …   Žemės ūkio augalų selekcijos ir sėklininkystės terminų žodynas

  • Mendel's laws — laws which determine which characteristics are inherited by plants and animals (developed by the Austrian botanist Gregor Mendel) …   English contemporary dictionary

  • Mendel's laws — rules of inheritance based on the breeding experiments of the Austrian monk Gregor Mendel (1822 84), which showed that the inheritance of characteristics is controlled by particles now known as gene. In modern terms they are as follows. (1) Each… …   Medical dictionary

  • Mendel's Laws — Two laws summarizing Gregor Mendel s theory of inheritance. The Law of Segregation states that each hereditary characteristic is controlled by two factors (now called alleles), which segregate and pass into separate germ cells. The Law of… …   Glossary of Biotechnology

  • Mendel's laws — rules of inheritance based on the breeding experiments of the Austrian monk Gregor Mendel (1822–84), which showed that the inheritance of characteristics is controlled by particles now known as genes. In modern terms they are as follows. 1) Each… …   The new mediacal dictionary

  • Mendel's laws — /ˈmɛndəlz lɔz/ (say menduhlz lawz) plural noun the basic principles of heredity, showing that alternative hereditary factors of hybrids exhibit a clean cut separation or segregation from one another, and that different pairs of hereditary traits… …  

  • Mendel's laws of inheritance — Genetic principles proposed by Mendel; law of segregation and law of independent assortment …   Dictionary of invertebrate zoology

  • Mendel’s laws —    1. Segregation: during meiosis only one member of each homologous chromosome pair is transferred to a specific gamete.    2. Independent assortment: during meiosis the members of the different homologous chromosome pairs assort independently… …   Forensic science glossary

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”