Arrangement of DNA and histones forming regular spherical structures in eukaryotic chromatin . The membrane bound organelle containing the genome of eukaryotes organized into chromosomes . An allele whose effect is either an absence of normal gene product at the molecular level or an absence of normal function at the phenotypic level. The statistical hypothesis that states that there are no differences between observed and expected data. A sister cell of an oocyte in insects.
Nurse cells produce the bulk of the cytoplasmic contents of the mature oocyte.
See auxotroph . The codon UAA, a nonsense codon . An ascus containing eight ascospore s, produced in species in which the tetrad normally undergoes a post meiotic mitotic division. Okazaki fragment Segment of newly replicated DNA produced during discontinuous DNA replication. A gene capable, when activated, of transform ing a cell.