Heteroausecic coefficient see allometric coefficient

heteroblastic a. [Gr. heteros, different; blastos, bud] Similar organs arising from different germ layers in different species. see homoblastic.

heteroblastic change Rapidly altered structures during transition from juvenile to adult.

heterobrachial a. [Gr. heteros, different; brachion, arm] Chromosome arms of unequal length.

heterocentric a. [Gr. heteros, different; kentron, midpoint] Dicentric chromosomes or chromatids whose centromeres are of unequal strength; frequently behave as monocentric chromosomes.

heterochelate a. [Gr. heteros, different; chele, claw] (ARTHRO: Crustacea) Having the chelae of left and right chelipeds varying in size and shape.

heterochromatin n. [Gr. heteros, different; chroma, color] Non or poorly staining part of the chromosome inactive in heredity, as contrasted with euchromatin. heterchromatic a.

heterochrome a. [Gr. heteros, different; chroma, color] Having different colors. see homochrome.

heterochromosome n. [Gr. heteros, different; chroma, color; soma, body] 1. Any chromosome differing from the auto-somes in size, shape or behavior. 2. A sex-chromosome; an allosome.

heterochronism n. [Gr. heteros, different; chronos, time]

Changes in the relative time of appearance and rate of development for characters already present in ancestors. heterochronic a.

heteroclite n. [Gr. heteros, differrent; clitos, hill] (MOLL: Bival-via) A folded or twisted commissural plane.

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