Ch 07 The Cell Cycle and Cell Division Flashcards
type of reproduction that results in clones
asexual reproduction
genetically identical
clones
alterations in DNA sequences caused by environmental factors or errors in DNA replication
mutations
fusion of two gametes
sexual reproduction
sex cells, reproductive cells
gametes
process of cell division that results in daughter cells with only half the genetic material of the original cell
meiosis
cell division resulting in gametes/reproductive cells
molecule of DNA and associated proteins
chromosome
body cells (not specialized for reproduction)
somatic cells
“pairs” of chromosomes that contain corresponding (but not identical) genetic information
homologous chromosomes
(one from each parent)
(each chromosome is a “homolog”
referring to cells that contain only 1 set of chromsomes
haploid
(denoted by “n”)
ex: gametes are haploid
referring to cells that contain both homologs, one from each parent
diploid
(denoted by “2n”)
ex: a zygote is diploid
result of the fusing of 2 haploid gametes
zygote
a fertilized egg
cell division in prokaryotes
binary fission
division of cell cytoplasm to form two daughter cells
cytokinesis
period from one cell division to the next
cell cycle