mating in filamentous ascomycota Flashcards
a typical ascus contains
8 ascospores
operculum
at the tip of the ascus where the spores are released from
what controls the mating process of Saccharomyces cerevisiae
a complex genetic locus called MAT at which two linked genes are located
which two linked genes are located at MAT a complex genetic locus which controls mating in Saccharomyces cerevisiae
a1,a2 for mating type a and alpha 1 and alpha2 for mating type alpha
MATa locus encodes for
a1 and a2 polypeptides, the messengers for which are transcribed in opposite direction.
a and alpha
join to produce a zygote from two septette ascomycota
- in one ascomycota there will be genes for a and in others gene for alpha
basidiomycetes have..
thousands of sexes
name some of the sexes of basidiomycetes
Homothalic (self fertile), heterthalic (partner required), monjaryon (uninucleate haploid), homokaryon (uni-or multi-nucleate haploid (n)_, dikaryon ( binucleate haploid (n+n)), heaterokaryon (multinucleate (n +n)), diploid (2n).
homothallic
self fetile
heterothallic
sex requires a partner
monjarygon
uninucleate haploid
homokaryon
uni or multi nucleate haploid (n)
dikaryon
binucleate haploid (n+n)
heterokaryon
multinucleate (n+n)
diploid
2n