Definitions Flashcards
Define: chromosome
A structure found inside the nucleus of a cell
Define: chromatin
a structural complex that condenses DNA so that it will fit within the nucleus
Define: sister chromatids
two identical structures that are collectively called chromosomes
Define: centromere
structure in a chromosome that holds together the two chromatids
Define: spindle fiber
a network of filaments that are formed during the cell division process
Define: genes
The basic unit of heredity passed from parent to child
Define: diploid
a cell that contains two copies of each chromosome
Define: haploid
the presence of a single set of chromosomes in an organism’s cells
Define: gametes
a reproductive cell of an animal or plant
Define: zygote
a cell formed by the union of two gametes
Define: crossing over
a cellular process that happens during meiosis when chromosomes of the same type are lined up
Define: independent assortment
how different genes independently separate from one another when reproductive cells develop
