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Bio MEIOSIS
sexual reproduction, meiosis, gametes
23
Biology
Undergraduate 1
11/10/2008

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Term
zygote
Definition
single cell; fertilized
Term
syngamy
Definition
fertilization of sex cell
Term
homologue
Definition
chromosome from mom or dad
Term
germ line cell
Definition
cells in the body which produce the gametes
Term
synapsis
Definition
pairing process of homologous chromosomes
Term
synaptomal complex
Definition
homologues paired with a latticework of proteins that connect them
Term
tetrad
Definition
name for the pair of chromosomes glued together (bivalent)
Term
bivalent
Definition
tetrad: name for pair of chromosmes glued together
Term
recombination
Definition
crossing over
Term
chiasmata
Definition
site of crossing over
Term
reduction division
Definition
first mitosis in meosis processes; makes diploids into haploids
Term
metaphase I: what occurs?
Definition
paired homologues align
Term
Anaphase I:
Definition
differential loss of sister chromatid cohesion along arms
Term
independent assortment
Definition
because of random assortment of chromosomes along the along metaphase plate, material randomly ends up in gametes
Term
telophase I ...completes ___
Definition
meosis I
Term
achiasmate segregation
Definition
alternative method for assembling homologues and assoring them
Term
mitosis II
Definition
miotic division without DNA replication
Term
in __ there is the attachment of sister kinetochores along same pole
Definition
Term
crossing over happens in which phase?
Definition
Prophase I
Term
non disjunction
Definition
failure to separate both chromosomes
Term
translocation
Definition
one chromosome bit floats and connects to another chomosome
Term
interkenesis
Definition
time between Meosis I and II
Term
example of a nondisjunction
Definition
Downs (Trisonomy 21)
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