词汇 | heterozygote |
释义 | heterozygote noun[ C ] biology specializeduk /ˌhet.ər.əʊˈzaɪ.ɡəʊt/ us /ˌhet̬.ə.roʊˈzaɪ.ɡoʊt/ a person, animal, or organism that has two different forms of a gene (= part of a cell containing DNA information) that controls a particular characteristic, one inherited from each parent, and is therefore able to pass on either form: 杂合子 DNA analysis may reveal a heterozygote.通过DNA分析可发现杂合子。 Heterozygotes have no manifestations of disease.杂合子没有疾病病症。 See heterozygous Both parents were heterozygotes for PK deficiency. In areas where malaria is common, heterozygotes have a strong selective advantage. If all heterozygotes have the same fitness, then the rare chromosome doubles in frequency in every generation. 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 heterozygoteheterozygote In our experiment, overdominant mutations will be scored as beneficial because we are scoring heterozygotes. The loss in successful outcross pollen in the heterozygote is then compensated by a gain in outcrossed ovules. These loci were not statistically dependent with no apparent heterozygote deficit or excess. We assume that all mutations segregating in the population are equally deleterious and have equivalent fitness effects in heterozygotes. Selection against heterozygotes is also unlikely because deviations were detected for 3 of the 6 polymorphic loci analysed. This is within the limits of uncertainty as regards the number of possible heterozygote carriers within our female population. Specifically we investigate levels of heterozygote deficit in the genotypes of oocysts from multiply infected mosquitoes. Populations reach a quasi-equilibrium, with mean fitness and heterozygote and homozygote number fluctuating around deterministic equilibrium levels. Polymorphism from environmental heterogeneity : models are only robust if the heterozygote is close in fitness to the favoured homozygote in each environment. This deviation was always towards a deficit of heterozygotes. The most important problem seems to be how the heterozygote of mutant alleles belonging to the same locus produced wild-type progeny. This might be expected when haploids are compared with heterozygotes, but not necessarily expected when haploids are compared with homozygous mutant diploids. On the potential for estimating the effective number of breeders from heterozygote-excess in progeny. Estimating the effective number of breeders from heterozygote excess in progeny. The heterozygote deficiencies were even higher in the other two species. See all examples of heterozygote 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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