mendelian ratio

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men·de·li·an ra·ti·o

the ratio of progeny with particular phenotypes or genotypes expected in accordance with Mendel law among the offspring of matings specified as to genotype or phenotype.


Gregor Johann, Austrian geneticist, 1822-1884.
Mendel first law - factors that affect development retain their individuality from generation to generation, do not become contaminated when mixed in a hybrid, and become sorted out from one another when the next generation of gametes is formed. Synonym(s): law of segregation
Mendel second law - different hereditary factors assort independently when the gametes are formed. Synonym(s): law of independent assortment
mendelian character - an inherited character under the control of a single locus.
mendelian inheritance - inheritance in which stable and undecomposable characters controlled by a single genetic locus are transmitted over many generations. Synonym(s): alternative inheritance
mendelian ratio - the ratio of progeny with a particular phenotype or genotype expected in accordance with Mendel law among the offspring of matings specified as to genotype or phenotype.
References in periodicals archive ?
Additionally, these markers were tested for deviation from expected Mendelian ratios by back-crossing F2 progeny to F1 parents and most segregated in a 1:1 ratio (Stratikopoulos et al.
0] grandparents, the observed frequencies of orange progeny were consistent with Mendelian ratios expected from a l-locus 2-allele system in which the brownish purple genotype was recessive.
In 17 broods, the mothers and spiderlings were all of the same genotype (AA), making it impossible to test for deviations from Mendelian ratios among progeny genotypes.
8%) segregated according to the Mendelian ratio (1:1), and 23 (8.
All 9 volunteer plants from the part of Field 1 sown with glufosinate-tolerant variety gave high percentages of glyphosate tolerance offspring, but only 7 out of the 9 showed the expected 3:1 Mendelian ratio, or more accurately, failed to deviate from it.
Chi-square analysis indicated that CN005, CN026, CN028, CN003, CN013, and CN067 were not in agreement with Mendelian ratios (P < 0.
1] generations derived from crosses between homozygous tolerant transgenic Brassica napus lines and their susceptible parent cultivars and fit of observed segregations to Mendelian ratios.
Family sex ratios within temperatures were highly heterogeneous and, at least at 15 [degrees] C, did not conform to simple Mendelian ratios.
Thirty-four loci segregated in the family, with seven showing significant deviation from Mendelian ratios after Bonferroni correction.
01) was used to test for deviations from the expected Mendelian ratios (1:1 in a the DH population, 1:2:1 or 3:1 in the [F.
Markers that did not significantly depart from Mendelian ratios at [alpha] = 0.