mitosis Flashcards
what is mitosis
process of cell division in somatic cells
what does the nucleus hold
DNA
G1- growth phase 1
The cell is doing its usual work to stay alive, growing, using energy
S- Synthesis
DNA replication
G2 = growth phase 2
cell grows and prepares for mitosis, double checks for errors
somatic cell
Body cell that has all 46 pairs of chromosomes
Diploid cell
Cell containing two sets of chromosome (2n), a set from each parent
Haploid cell
cell containing one set of chromosome, divide by meiosis
Exception of haploid cells dividing in mitosis
-bees because they come from unfertilized eggs
-Gametophytes
Gametophytes
stage in a plant’s life that makes sperm and eggs.
Chromatin
thin un-condensed strands where DNA is found
Chromosome
Chromatin is condensed into chromosomes, humans have 46 chromosomes
Chromatid
identical half of a chromosme
-sister chromatids have same alleles
centromere
holds together 2 sister chromosomes and 2 homologous chromosomes
Gamete
sex cell
Sperm cell in males
Egg cell in female
half the number of chromosomes (23)