Bio 190L cell division and meiosis
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24 Terms
Phase of Mitosis (incluede interphases)
interphase
(g1, s, g2)
Prophase
prometaphase
metaphase
anaphase
telophase
cytokinesis
Meiosis 1 separates and Meiosis 2 separates
homolougs chromosomes sister chromatids
How does meiosis create genetic diversity (2 ways)
independet assortment and crossing over
when does indpendent assortment and crossing over happen
metaphase one prophase one
What is a tertiary follicle? what does it release
mature follicle that release secondary occyte
steps of oogenesis
Oogonium (2n to primary oocyte 2n
primary oocyte 2n to secondary oocyte (n) and polar body (took the other n and dies) `
Steps of spermatogensis
spermatogonium 2n to primary spermatocyte 2n
primary spermatocyte 2n to secondary spermatocyte n
secondary spermatocyte n to spermatids n
spermatids to spermatozoa (n)
difference with oogenesis and spermatogenesis
oogonium happens during devlopment
oogonium makes 2 polar bodies and one ova
_____ ____ happens after fertillization
meiosis 2
what happesn in g1 2 and g2
cell gets bigger
dna replication
cell prepares to divide
what is cytokinesis
when cytoplasm divides and has a daughter cell with a complete set
What do you call sex cells
gametes
What connects sister chromatids?
centromere
What is it called when plants when plants grow and all that mitosis is there?
apical meristem
When sperm fertilizes ovum its called
zygote
What is a ball of cells called
blastula
What do animal cells use in anaphase to separate chromosomes
centroles
What are pair of chromosomes called how many PAIRS do humans have
homologus 23 pairs
gamete cells are called
sperm and ova
THe pairing of sister chromatids is called (4 chromosomes) and crosses
tetrad
What is error in cell division called
nondisjunction
when is secondary oocyte released
ovulation
What are large cells in the ovary that is released during ovulation
Graffian follicles
What is it called when homologous pair of chromosomes pair together in meiosis
synapsis