IMG_0003_NEW_0018

IMG_0003_NEW_0018 - determination in mammals Y n tt LI tt...

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Sex determination (germ cell fate determination) Many animals come in two forms: male and female Anatomical differences are found in somatic tissues and in the germ cells. Sex specific differences are typically not visible in early embryos. Sex can be determined by environmental influences (some reptiles) or by the genome (sex chromosome) o -\4 2 a chotrte tXX) crvut pn"an*{, e\ ? du,d"pa, r"lhp,rqs tk- g,v.,*lru J G' Y chr*r*:.nu- tXY ) \&"Ar t., clu^ctgwir,rl "d . fl Sex
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Unformatted text preview: determination in mammals Y n tt LI tt sw It \1 JI il .t I iJ l({trw14!tn1{ ?d}$ir}0r{ffi SRY: *ex-determining e"egion of the Y chromosome (or absence) of the Y chromosome. One particular region of the Y chromosome (SBU_ encoding a transcription factor is sufficient for the 'male' phenotype. This means XXY or XXXY leads to I male, XO to female development I eW\o,lQ rA o * (hrurur.rnu'i ctrrr brndd {*q-o, J rrx rri.o5sf chr*ftJrn ,W) 13...
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This note was uploaded on 12/27/2011 for the course BISC 333 taught by Professor Mattsson during the Fall '09 term at Simon Fraser.

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