cell division and replication vocabulary Flashcards
spindle fiber
fiber that are attraached to centrioles to help pull apart chromosomes
centromere
strucuture that holds replicated chromosomes togehter
chromosome
single piece of colied dna
diploid
a cell that contains a set if chromosomes from a man and wife (46 in human)
replicated chromosome
a single piece of dna that has been copied through dna replication
sister
two identical strands of Dna
non- replicated chromosome
single strand of dna before it has been replicated
somatic cell
body cell that undergoes mitosis
homologous chromosomes
corresponding (matching) chromosomes form a female and a male parent (pair of chromosomes)
tetrad
strucuture formed by two homologous chromosomes
gene
segment of dna that codes a trait
haploid cell (n)
a cell that contains one set of chromosomes
allele
variation of a gene
diploid cell(2n)
a cell that contains both sets of homologous chromosomes