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chromonema
[ kroh-muh-nee-muh ]
noun
, Genetics.
, plural chro·mo·ne·ma·ta [kroh-m, uh, -, nee, -m, uh, -t, uh].
- a chromosome thread that is relatively uncoiled at early prophase but assumes a spiral form at metaphase.
chromonema
/ ˌkrəʊməʊnɪˈmætɪk; ˌkrəʊməˈniːmə /
noun
- the coiled mass of threads visible within a nucleus at the start of cell division
- a coiled chromatin thread within a single chromosome
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Derived Forms
- ˌchromoˈnemal, adjective
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Other Words From
- chro·mo·ne·mat·ic [kroh-m, uh, -n, uh, -, mat, -ik, -nee-], adjective
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Word History and Origins
Origin of chromonema1
1920–25; chromo- + Greek nêma thread
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Word History and Origins
Origin of chromonema1
C20: from chromo- + Greek nēma thread, yarn
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Example Sentences
Molecular models suggest that chromosomes assemble in an ordered, hierarchical way: DNA wraps around proteins called histones to form nucleosomes, which fold into 30-nanometre fibres, then 120-nanometre ‘chromonema’, and further into larger chromatin structures until they reach their most tightly coiled form — the characteristic X-shaped bodies.
From Nature
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