Chromosomes and meiosis
, referenzenes
to
thread-like structures that form part oft he chromatin networkin the nucleiofcells
long,
made up ofa strand of DNAwound around histone proteins
·
discovered in originally called coloured bodies:a bsord dye very easily
-
1888
·
·
can
only be seen as individual threads when a cell is
dividing
in somatic cells
·
no. ofc hromosomes in each cell- same
·
made up of 2 sets:1 -maternal and I paternal
=
-
diploid cells 2n
=
↳
matching maternal and paternal
homologous
=
pair
↳
pair of chromosomes ofs ame size and shape,same genes in same place
alleles
↳
notb e the same
may
~S t re e tn e e
DNA ofeach chromosome replicates 2 identical threads/chromatics
joined by a centromere
· =
↳
takes place during interphase
cell full complemento fall the material
replication very important- > each
daughter receives
genetic
↳> -
rehamogame number
·
each species has a specific no. ofc hromosomes in somatic cells
, referenzenes
to
thread-like structures that form part oft he chromatin networkin the nucleiofcells
long,
made up ofa strand of DNAwound around histone proteins
·
discovered in originally called coloured bodies:a bsord dye very easily
-
1888
·
·
can
only be seen as individual threads when a cell is
dividing
in somatic cells
·
no. ofc hromosomes in each cell- same
·
made up of 2 sets:1 -maternal and I paternal
=
-
diploid cells 2n
=
↳
matching maternal and paternal
homologous
=
pair
↳
pair of chromosomes ofs ame size and shape,same genes in same place
alleles
↳
notb e the same
may
~S t re e tn e e
DNA ofeach chromosome replicates 2 identical threads/chromatics
joined by a centromere
· =
↳
takes place during interphase
cell full complemento fall the material
replication very important- > each
daughter receives
genetic
↳> -
rehamogame number
·
each species has a specific no. ofc hromosomes in somatic cells
