Mendelian ratio


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Mendelian ratio

[men′dēl·yən ′rā·shō]
(genetics)
The ratio of occurrence of various phenotypes in F1 and F2 generations in any cross involving characters controlled by nuclear genes.
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In addition, chi-square analysis revealed that 350 of those markers (179 in female and 171 in male) segregated with a 1:1 ratio, and 54 (30 in female and 24 in male) deviated significantly from the Mendelian ratio at P < 0.
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.
To determine whether a single male was unlikely to account for the genetic diversity of a female's brood, we used a significant deviation from a Mendelian ratio among progeny genotypes as our criterion.
The progeny of such plants are expected to show the typical 3:1 Mendelian ratio of tolerant to sensitive plants for one gene, and 15:1 for two genes in the case of imidazolinone.
In addition, the chi-square analysis revealed that 350 (179 in female and 171 in male) segregated with a 1:1 ratio and 54 (30 in female and 24 in male) deviated significantly from the Mendelian ratio at P < 0.
Thirty-four loci segregated in the family, with seven showing significant deviation from Mendelian ratios after Bonferroni correction.
Markers that did not significantly depart from Mendelian ratios at [alpha] = 0.