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1. Having different forms at different periods of the life cycle, as in stages of insect metamorphosis.
2. Differing from the standard form in size or structure: heteromorphic chromosome pairs.

het′er·o·mor′phism n.


(ˌhɛtərəʊˈmɔːfɪk) or


1. (Biology) differing from the normal form in size, shape, and function
2. (Biology) (of pairs of homologous chromosomes) differing from each other in size or form
3. (Biology) (esp of insects) having different forms at different stages of the life cycle
ˌheteroˈmorphism, ˌheteroˈmorphy n


(ˌhɛt ər əˈmɔr fɪk)

1. Biol. dissimilar in shape, structure, or magnitude.
2. Entomol. undergoing complete metamorphosis; possessing varying forms.
het`er•o•mor′phism, het′er•o•mor`phy, n.
References in periodicals archive ?
Inflorescences axillary or terminal, racemose, 2-33-flowered; bracts persistent or deciduous; bracteoles absent; flowers zygomorphic or asymmetric; Sepals 5, two smaller and three larger; petals 5, yellow or orange base; stamens 7, heteromorphic, 4 smaller median, subsessile, fillet erect, 2-3 abaxial larger, 2 laterals, fillets curved, twice the length of the anthers, 1 central, fillet erect, less than anther, 3-4 adaxialstaminodes or or absent, anthers dehiscent through apical sutures.
6A) and FN=99 (MN82943, from Fazenda Ilha, locality 43) composed by 19 pairs of biarmed and 10 pairs of acrocentric chromosomes, and a heteromorphic pair of small chromosomes (Fig.
Seed heteromorphic is a special case of within-individual variation in seed size.
The largest autosomal pair is always heteromorphic (submetacentric/subtelocentric) and both homologous autosomes differ distinctly in their size.
Karyotype (2n= 54, XY) with 17 pairs of acrocentric and nine pairs of metacentric/submetacentric chromosomes, and an acrocentric heteromorphic sexual pair (Oliveira et al.
Dilla is a thick fiber of heteromorphic section with 16 dtex, and the nonwovens offer superior breath-ability and rigidness, while heat resistance and intensity are high.
Stomatochroon"s life history consists of an alternation of heteromorphic generations (Thompson and Wujek, 1997).
The fire ant social chromosome thus offers a unique opportunity to gain novel insights on supergene evolution, evolution of heteromorphic chromosomes and the evolutionary transitions in social organisation.
Histopathologic analysis identified a few chondrocytes embedded in an abundant myxoid matrix and heteromorphic nuclei (figure 3).
Distribution of radioactive leucine following uptake by olfactory sensory neurons in normal and heteromorphic crayfish antennules.
The heteromorphic life history of Chlorochytrium inclusum and Spongomorpha congregata includes a unicellular, putative diploid state that is a common endophyte in the outer cortex of boreal Furcellaria lumbricalis and foliose red algae, including Dilsea socialis (Jonsson, 1962; Kornmann, 1964, 1972; Jaasund 1965; Chihara, 1969; Hudson, 1974).
For the 4 Plebeia species the heterochromatic arm of the heteromorphic pair was marked by [CMA.