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Double number of dyad chromosomes in metaphase II TG Rec8-N-Myc spermatocytes. (A) Condensed chromosomes found in Giemsa-stained spread preparations: 40 chromosomes with arm closed (Mitotic Metaphase); approximately 20 bivalents; approximately 20 dyads; approximately 40 dyads. (B) Frequencies of different classes of condensed chromosomes shown in A. Numbers of nuclei examined are indicated (n).
