cell division - meiosis Flashcards
whats a diploid number
total number of chromosomes found in a somatic cell
wahts the haploid numberq
total number of chromosomes found in a sex cell - gemete
propahse 1
centrosome movement
spindle formation
nuclear envelope breakdown
what happens in early prophase 1
chromosomes pair with homologs
and form chiasmata
what happens in late propahse 1
microtubules attach to kinetochores
what aligment must homologs be in prophase 1
bi oriented
what are the 5 stages of prophase 1
Leptotene
Zygotene
Pachytene
Diplotene
Diakinesis
leptotene
chromosomes start to condense
what are chromomeres
chromosomes look like string of beads
attached to the nuclear envelope by their telomeres
what are sister chromatids helf togetehr by
cohesins
what is zygotene
stage in where homologs pair
process called synapsis