Reversal of heterochromatization and the activity of the paternal chromosome set in the male mealy bug.


N male mealy bugs with the lecanoid chromosome system, one haploid set of I chromosomes becomes heterochromatic early in embryogeny, whereas both haploid sets of female nuclei remain euchromatic. The heterochromatic set was first described by SCHRADER (1921 ) . Later, HUGHES-SCHRADER (1935) showed that this set was not transmitted by the male to its… (More)

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