Chromosome
what is a chromosome?
a condensed strand of DNA
What phase is reponsible for dna replication?
S phase
what is the shape of dna?
double helix
what stages are part of interphase?
G1, G2, S phases
in the form of chromatin, is gentic material easily read?
yes
how many chromosomes does a human have?
46 chromosomes
In what process is replicated dna seperated?
mitosis
what is dna helicase?
an enzyme that breaks down the hydrogen bonds between each nitrogenous pair
what stages are part of mitotic phase?
mitosis and cytokinesis
where is chromatin found?
loose strands of dna found in the interphase
when does dna condense into chromosomes?
during mitosis
what is replicated dna attached at the center by?
centromere
what keeps two strands of dna togther?
hydrogen bonds
what is s phase?
the replication of dna
what are sister chromatids?
dna that has been replicated and then condensed forms known as sister chromatids
why are chromosomes better?
because they allow for easier distribution after cell division
what is the name of the sections that the lagging strand builds?
okazaki fragments
2 hydrogen bonds
what happens in cytokinesis of a plant cell?
cytoplasm is split and forms a cell plate
homologous chromosomes are...?
similar genes that code for certain traits
Can dna instruction be read in chromosome form?
No
what direction is dna built?
5 to 3
what form is dna usually in?
chromatin
what happens in cytokinesis of an animal cell
the cytoplasm divides and forms the cleavage furrow
Sister chromatids are considered only one chromosome until...?
they seperate during mitosis