醫(yī)學(xué)遺傳學(xué)多基因病課件

第五章多基因病第一節(jié)多基因遺傳與數(shù)量遺傳數(shù)量性狀與多基因假說質(zhì)量性狀(qualitativecharacter)單基因遺傳中所涉及的遺傳性狀都是由對基因所控制,相對性狀之間的差別明顯,一個群體中的變異分布是不連續(xù)的,可將變異的個體明顯地區(qū)分為2~3組,沒有中間類型,這類性狀稱為質(zhì)量性狀。第五章多基因病1圖1AA和Aaaa圖2aaAaAA圖1AA和Aa2數(shù)量性狀(quantitativecharacter)與上述的性狀不同,多基因遺傳性狀在個群體中變異的分布是連續(xù)的,呈正態(tài)分布,即大部分個體屬于中間類型,極端變異的個體極少,而且個體之間只有量的差別而沒有質(zhì)的差別。即性狀變異在群體中的分布是連續(xù)的,不同個體間的差異只是量的差異,變異很小,稱為數(shù)量性狀(quantitativecharacter)數(shù)量性狀(quantitativecharacter)3醫(yī)學(xué)遺傳學(xué)多基因病課件4變員數(shù)0m004130140150160170180190200身高cm變員數(shù)5醫(yī)學(xué)遺傳學(xué)多基因病課件6醫(yī)學(xué)遺傳學(xué)多基因病課件7醫(yī)學(xué)遺傳學(xué)多基因病課件8醫(yī)學(xué)遺傳學(xué)多基因病課件9醫(yī)學(xué)遺傳學(xué)多基因病課件10醫(yī)學(xué)遺傳學(xué)多基因病課件11醫(yī)學(xué)遺傳學(xué)多基因病課件12醫(yī)學(xué)遺傳學(xué)多基因病課件13醫(yī)學(xué)遺傳學(xué)多基因病課件14醫(yī)學(xué)遺傳學(xué)多基因病課件15醫(yī)學(xué)遺傳學(xué)多基因病課件16醫(yī)學(xué)遺傳學(xué)多基因病課件17醫(yī)學(xué)遺傳學(xué)多基因病課件18醫(yī)學(xué)遺傳學(xué)多基因病課件19醫(yī)學(xué)遺傳學(xué)多基因病課件20醫(yī)學(xué)遺傳學(xué)多基因病課件21醫(yī)學(xué)遺傳學(xué)多基因病課件22醫(yī)學(xué)遺傳學(xué)多基因病課件23醫(yī)學(xué)遺傳學(xué)多基因病課件24醫(yī)學(xué)遺傳學(xué)多基因病課件25醫(yī)學(xué)遺傳學(xué)多基因病課件26醫(yī)學(xué)遺傳學(xué)多基因病課件27醫(yī)學(xué)遺傳學(xué)多基因病課件28醫(yī)學(xué)遺傳學(xué)多基因病課件29醫(yī)學(xué)遺傳學(xué)多基因病課件30醫(yī)學(xué)遺傳學(xué)多基因病課件31醫(yī)學(xué)遺傳學(xué)多基因病課件32醫(yī)學(xué)遺傳學(xué)多基因病課件33醫(yī)學(xué)遺傳學(xué)多基因病課件34醫(yī)學(xué)遺傳學(xué)多基因病課件35醫(yī)學(xué)遺傳學(xué)多基因病課件36醫(yī)學(xué)遺傳學(xué)多基因病課件37醫(yī)學(xué)遺傳學(xué)多基因病課件38醫(yī)學(xué)遺傳學(xué)多基因病課件39醫(yī)學(xué)遺傳學(xué)多基因病課件40醫(yī)學(xué)遺傳學(xué)多基因病課件41醫(yī)學(xué)遺傳學(xué)多基因病課件42醫(yī)學(xué)遺傳學(xué)多基因病課件43醫(yī)學(xué)遺傳學(xué)多基因病課件44醫(yī)學(xué)遺傳學(xué)多基因病課件45醫(yī)學(xué)遺傳學(xué)多基因病課件46醫(yī)學(xué)遺傳學(xué)多基因病課件47醫(yī)學(xué)遺傳學(xué)多基因病課件48醫(yī)學(xué)遺傳學(xué)多基因病課件49醫(yī)學(xué)遺傳學(xué)多基因病課件50醫(yī)學(xué)遺傳學(xué)多基因病課件51醫(yī)學(xué)遺傳學(xué)多基因病課件52醫(yī)學(xué)遺傳學(xué)多基因病課件53醫(yī)學(xué)遺傳學(xué)多基因病課件54醫(yī)學(xué)遺傳學(xué)多基因病課件55醫(yī)學(xué)遺傳學(xué)多基因病課件56醫(yī)學(xué)遺傳學(xué)多基因病課件57醫(yī)學(xué)遺傳學(xué)多基因病課件58醫(yī)學(xué)遺傳學(xué)多基因病課件59醫(yī)學(xué)遺傳學(xué)多基因病課件60醫(yī)學(xué)遺傳學(xué)多基因病課件61醫(yī)學(xué)遺傳學(xué)多基因病課件62醫(yī)學(xué)遺傳學(xué)多基因病課件63醫(yī)學(xué)遺傳學(xué)多基因病課件64醫(yī)學(xué)遺傳學(xué)多基因病課件65醫(yī)學(xué)遺傳學(xué)多基因病課件66醫(yī)學(xué)遺傳學(xué)多基因病課件67醫(yī)學(xué)遺傳學(xué)多基因病課件68醫(yī)學(xué)遺傳學(xué)多基因病課件69醫(yī)學(xué)遺傳學(xué)多基因病課件70醫(yī)學(xué)遺傳學(xué)多基因病課件71醫(yī)學(xué)遺傳學(xué)多基因病課件72醫(yī)學(xué)遺傳學(xué)多基因病課件73醫(yī)學(xué)遺傳學(xué)多基因病課件74醫(yī)學(xué)遺傳學(xué)多基因病課件75醫(yī)學(xué)遺傳學(xué)多基因病課件76醫(yī)學(xué)遺傳學(xué)多基因病課件77醫(yī)學(xué)遺傳學(xué)多基因病課件78醫(yī)學(xué)遺傳學(xué)多基因病課件79醫(yī)學(xué)遺傳學(xué)多基因病課件80醫(yī)學(xué)遺傳學(xué)多基因病課件81醫(yī)學(xué)遺傳學(xué)多基因病課件82醫(yī)學(xué)遺傳學(xué)多基因病課件83醫(yī)學(xué)遺傳學(xué)多基因病課件84醫(yī)學(xué)遺傳學(xué)多基因病課件85醫(yī)學(xué)遺傳學(xué)多基因病課件86醫(yī)學(xué)遺傳學(xué)多基因病課件87醫(yī)學(xué)遺傳學(xué)多基因病課件88醫(yī)學(xué)遺傳學(xué)多基因病課件89醫(yī)學(xué)遺傳學(xué)多基因病課件90醫(yī)學(xué)遺傳學(xué)多基因病課件91醫(yī)學(xué)遺傳學(xué)多基因病課件92醫(yī)學(xué)遺傳學(xué)多基因病課件93醫(yī)學(xué)遺傳學(xué)多基因病課件94醫(yī)學(xué)遺傳學(xué)多基因病課件95醫(yī)學(xué)遺傳學(xué)多基因病課件96醫(yī)學(xué)遺傳學(xué)多基因病課件97醫(yī)學(xué)遺傳學(xué)多基因病課件98醫(yī)學(xué)遺傳學(xué)多基因病課件99醫(yī)學(xué)遺傳學(xué)多基因病課件100醫(yī)學(xué)遺傳學(xué)多基因病課件101醫(yī)學(xué)遺傳學(xué)多基因病課件102醫(yī)學(xué)遺傳學(xué)多基因病課件103醫(yī)學(xué)遺傳學(xué)多基因病課件104醫(yī)學(xué)遺傳學(xué)多基因病課件105醫(yī)學(xué)遺傳學(xué)多基因病課件106醫(yī)學(xué)遺傳學(xué)多基因病課件107醫(yī)學(xué)遺傳學(xué)多基因病課件108醫(yī)學(xué)遺傳學(xué)多基因病課件109醫(yī)學(xué)遺傳學(xué)多基因病課件110醫(yī)學(xué)遺傳學(xué)多基因病課件111醫(yī)學(xué)遺傳學(xué)多基因病課件112醫(yī)學(xué)遺傳學(xué)多基因病課件113醫(yī)學(xué)遺傳學(xué)多基因病課件114醫(yī)學(xué)遺傳學(xué)多基因病課件115醫(yī)學(xué)遺傳學(xué)多基因病課件116醫(yī)學(xué)遺傳學(xué)多基因病課件117醫(yī)學(xué)遺傳學(xué)多基因病課件118醫(yī)學(xué)遺傳學(xué)多基因病課件119醫(yī)學(xué)遺傳學(xué)多基因病課件120醫(yī)學(xué)遺傳學(xué)多基因病課件121第五章多基因病第一節(jié)多基因遺傳與數(shù)量遺傳數(shù)量性狀與多基因假說質(zhì)量性狀(qualitativecharacter)單基因遺傳中所涉及的遺傳性狀都是由對基因所控制,相對性狀之間的差別明顯,一個群體中的變異分布是不連續(xù)的,可將變異的個體明顯地區(qū)分為2~3組,沒有中間類型,這類性狀稱為質(zhì)量性狀。第五章多基因病122圖1AA和Aaaa圖2aaAaAA圖1AA和Aa123數(shù)量性狀(quantitativecharacter)與上述的性狀不同,多基因遺傳性狀在個群體中變異的分布是連續(xù)的,呈正態(tài)分布,即大部分個體屬于中間類型,極端變異的個體極少,而且個體之間只有量的差別而沒有質(zhì)的差別。即性狀變異在群體中的分布是連續(xù)的,不同個體間的差異只是量的差異,變異很小,稱為數(shù)量性狀(quantitativecharacter)數(shù)量性狀(quantitativecharacter)124醫(yī)學(xué)遺傳學(xué)多基因病課件125變員數(shù)0m004130140150160170180190200身高cm變員數(shù)126醫(yī)學(xué)遺傳學(xué)多基因病課件127醫(yī)學(xué)遺傳學(xué)多基因病課件128醫(yī)學(xué)遺傳學(xué)多基因病課件129醫(yī)學(xué)遺傳學(xué)多基因病課件130醫(yī)學(xué)遺傳學(xué)多基因病課件131醫(yī)學(xué)遺傳學(xué)多基因病課件132醫(yī)學(xué)遺傳學(xué)多基因病課件133醫(yī)學(xué)遺傳學(xué)多基因病課件134醫(yī)學(xué)遺傳學(xué)多基因病課件135醫(yī)學(xué)遺傳學(xué)多基因病課件136醫(yī)學(xué)遺傳學(xué)多基因病課件137醫(yī)學(xué)遺傳學(xué)多基因病課件138醫(yī)學(xué)遺傳學(xué)多基因病課件139醫(yī)學(xué)遺傳學(xué)多基因病課件140醫(yī)學(xué)遺傳學(xué)多基因病課件141醫(yī)學(xué)遺傳學(xué)多基因病課件142醫(yī)學(xué)遺傳學(xué)多基因病課件143醫(yī)學(xué)遺傳學(xué)多基因病課件144醫(yī)學(xué)遺傳學(xué)多基因病課件145醫(yī)學(xué)遺傳學(xué)多基因病課件146醫(yī)學(xué)遺傳學(xué)多基因病課件147醫(yī)學(xué)遺傳學(xué)多基因病課件148醫(yī)學(xué)遺傳學(xué)多基因病課件149醫(yī)學(xué)遺傳學(xué)多基因病課件150醫(yī)學(xué)遺傳學(xué)多基因病課件151醫(yī)學(xué)遺傳學(xué)多基因病課件152醫(yī)學(xué)遺傳學(xué)多基因病課件153醫(yī)學(xué)遺傳學(xué)多基因病課件154醫(yī)學(xué)遺傳學(x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