At the crux of these intersecting chiasmas is Mah-to-toh-pa's image, rising on Catlin's canvas from the stain of his pallet. |
The absence of chiasmata can readily account for the observed defect in meiotic chromosome segregation. |
Twelve univalent chromosomes are visible in this diakinesis-stage nucleus, indicating an absence of chiasmata. |
A given factor s can affect the recombination rate r through a change in the number of chiasmata occurring during meiosis. |