词汇 | heterozygosity |
释义 | heterozygosity noun[ U ] biology specializeduk /ˌhet.ər.ə.zaɪˈɡɒs.ə.ti/ us /ˌhet̬.ə.roʊ.zaɪˈɡɑː.sə.t̬i/ the state of having two different forms of a gene(= part of a cell containing DNA information) that controls a particular characteristic, one from each parent, and therefore able to pass on either form: (基因)杂合性 The loss of heterozygosity in both sporadic and hereditary forms of basal cell carcinoma suggests that it functions as a tumour suppressor.在偶发性和遗传性基底细胞癌中的杂合性缺失表明,它具有肿瘤抑制基因的功能。 Related word heterozygous The prevalence of apparent heterozygosity for Pyruvate Kinase Deficiency has been estimated to be around one percent. Lobular carcinoma in situ and invasive ductal carcinoma have been shown to exhibit similar loss of heterozygosity. Genetics accession number adenine anaphase autosomal autosomally genetic fingerprinting genetically genetically engineered geneticist genic genomic genomics monozygotic mutate non-familial non-genetic non-mutant nondominant nonhomologous sex-linked Examples of heterozygosityheterozygosity In the case of grain yield, the relative effect of heterozygosity increased substantially with increasing levels of stress. On the other hand, our heterozygous crosses necessarily restored heterozygosity in the background as well as the second chromosome. Individual heterozygosities ranged from 0n250 to 0n900, and allelic diversities from 0n250 to 1n333. This would result in a decrease of the squared residuals of the heterozygosity-trait regression when heterozygosity increases. According to prediction (ii), a negative relationship between heterozygosity and variance in the fitness trait is expected only under the inbreeding hypothesis. In all cases the observed heterozygosity was considerably lower than the expected heterozygosity. For allozymes, heterozygosities were much higher in triploids than in diploids. Correlations between heterozygosity and both mean and variance of phenotypes could indeed be parsimoniously explained by inbreeding. Their relative heterozygosity indeed depends on the origin of clonality. In both these designs the only requirement is marker heterozygosity. Observed heterozygosity did not differ between the two classes of repeat arrays. In addition, the heterozygosity-growth relationship displays a significant variation among annual cohorts, being more pronounced in young cohorts. The same set of simulations also yielded allele numbers and diversity (expected heterozygosity) values at the neutral locus under the infinite alleles model. This also affirms the fact that infectious diseases play an important role in selection for heterozygosity within the species. What should we weigh to estimate heterozygosity, alleles or loci? These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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