Mendel laws

(men'del) [Gregor Johann Mendel, Austrian monk, 1822–1884] The laws governing the genetic transmission of dominant and recessive traits. By carefully studying the heredity characteristics of garden peas, Mendel was able to explain the transmission of certain traits from one generation to the next.

Many inherited characteristics are controlled by the interaction of two genes, one from each parent. During meiosis, parent cells divide and contribute half their chromosome complement to the egg or sperm. After fertilization, the zygote contains a pair of each chromosome; each pair has genes for the same traits at corresponding locations. Alternate forms of the gene for a specific trait are called alleles, which may be dominant or recessive. See: allele; chromosome; gamete; gene; meiosis

Mendel's law of segregation states that as the gametes are formed, the gene pairs separate and do not influence each other.

Mendel's law of dominance resulted from his observation that crossing a tall strain of peas with a short strain resulted in the expression of the dominant trait, in this case tallness. Thus, a dominant trait will appear in the individual even if only one allele for it is present in the genome.

Mendel's law of independent assortment states that traits controlled by different gene pairs (such as height and color) pass to the offspring independently of each other.

单词	mendel laws
释义	Mendel laws Mendel laws (men'del) [Gregor Johann Mendel, Austrian monk, 1822–1884] The laws governing the genetic transmission of dominant and recessive traits. By carefully studying the heredity characteristics of garden peas, Mendel was able to explain the transmission of certain traits from one generation to the next. Many inherited characteristics are controlled by the interaction of two genes, one from each parent. During meiosis, parent cells divide and contribute half their chromosome complement to the egg or sperm. After fertilization, the zygote contains a pair of each chromosome; each pair has genes for the same traits at corresponding locations. Alternate forms of the gene for a specific trait are called alleles, which may be dominant or recessive. See: allele; chromosome; gamete; gene; meiosis Mendel's law of segregation states that as the gametes are formed, the gene pairs separate and do not influence each other. Mendel's law of dominance resulted from his observation that crossing a tall strain of peas with a short strain resulted in the expression of the dominant trait, in this case tallness. Thus, a dominant trait will appear in the individual even if only one allele for it is present in the genome. Mendel's law of independent assortment states that traits controlled by different gene pairs (such as height and color) pass to the offspring independently of each other.
随便看	canadian ice fishing championships canadian ice service canadian identity preserved recognition system canadian idol canadian image processing and pattern recognition society canadian imaging products remanufacturers association canadian imaging trade association canadian immigration and citizenship canadian immigration and refugee board canadian immigration integration project canadian immigration technical resource network canadian immunization awareness program canadian immunization guide canadian immunodeficiencies patient organization canadian imperial bank canadian imperial bank of commerce canadian imperial holdings, inc. canadian imperial venture corp. canadian improv games canadian independent adjusters' association canadian independent film and video fund canadian independent film caucus canadian independent group of funeral homes canadian independent medical clinics association canadian independent petroleum marketers association