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GCE MAY 2006 : (A2 2) Reproduction, Genetics and Taxonomic Diver (Irish Medium)

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Uimhir L rionaid 71 Uimhir Iarrth ra ADVANCED General Certificate of Education 2006 Bitheola ocht Aonad Meas naithe A2 2 ag meas n Mod l 5: At irgeadh, G ineola ocht agus ags lacht Thacsanoma och [A2B21] D ARDAOIN 25 BEALTAINE, MAIDIN AM 1 uair 30 n im ad. TREOIR D IARRTH IR Scr obh d Uimhir L rionaid agus d Uimhir Iarrth ra sna sp sanna chuige sin ag barr an leathanaigh seo. Scr obh do fhreagra sna sp sanna chuige sin sa cheistph ip ar seo. Freagair gach ceann de na naoi gceist. EOLAS D IARRTH IR Is 75 an marc ioml n don ph ip ar seo. T 60 marc ag dul do Roinn A. T 15 mharc ag dul do Roinn B. Ba ch ir duit tuairim is 20 n im ad a chaitheamh ar Roinn B. Glactar leis go bhfreagr idh t Roinn B i bpr s lean nach. Meas n far caighde n na cumars ide scr ofa i Roinn B. L ir onn figi ir idir l ib n ar thaobh na l imhe deise de leathanaigh na marcanna at ag dul do gach ceist n do gach cuid de cheist. Don Scr daitheoir amh in Uimhir Marcanna Ceiste 1 2 3 4 5 6 7 8 9 Marc Ioml n A2B2S6 1628.03 LEATHANACH B N A2B2S6 1628.03 2 [Turn over Roinn A Scr daitheoir Amh in Marcanna Athmharc 1 Comhl naigh an eochair th os leis na ceithre fh leam dhifri la den r ocht Animalia at lip adaithe A, B, C agus D a shainaithint. An bhfuil an t-ainmh tripleablastach? T N l F leam A _____________________ An bhfuil cuas coirp n c al m ag an ainmh ? N l T F leam B _____________________ An bhfuil creatlach inmhe nach ina bhfuil cn mh n loinge n ag an ainmh ? T N l F leam C _____________________ F leam D _____________________ [4] A2B2S6 1628.03 3 [Tiontaigh an leathanach 2 Sa l ar id seo th os taispe ntar an strucht r at ar phr tallas. Scr daitheoir Amh in Marcanna Athmharc arcag iniama antairidiama rios idigh Foinse: A-Level Biology (Revised edition), W. D. Phillips and I. J. Chilton, Oxford University Press, 1995 (a) (i) C acu cine l de phlanda a mb onn an pr tallas sa shaolr aige? [1] (ii) Cad pl ideacht an phr tallais? [1] (iii) De ghn th caithfidh d la taise a bheith ag an phr tallas. Luaigh f th amh in at leis seo. [1] (b) (i) Na hantairidiama agus na harcag iniama at l irithe sa l ar id, b onn gaim it dt irgeadh acu. Cad an cine l de ghaim it a th irgtear sna hantairidiama ? [1] (ii) Luaigh difear amh in at ann idir na gaim it a th irgtear leis na hantairidiama agus na gaim it a th irgtear leis na harcag iniama . [1] (c) Luaigh feidhm amh in a d fh adfadh a bheith leis na rios idigh at l irithe sa l ar id thuas. [1] A2B2S6 1628.03 4 [Turn over 3 Sa l ar id th os taispe ntar h f de fhungas an bhior-mh sc in, Mucor. B onn an t-aoileach r luibhiteoir , amhail coin n , choil ni go luath ag Mucor. fol is n Scr daitheoir Amh in Marcanna Athmharc cillbhalla aoileach c teaplasma Foinse: Arna chur in oiri int C. J. Clegg Microbes in Action , John Murray, 2002 (a) Luaigh an comhdh anamh at ar an chillbhalla de Mucor. [1] (b) Cuir s os ar an d igh a bhfaigheann Mucor bia. [3] T na horg naigh sa r ocht Fungas eocaratach. (c) Luaigh saintr ith amh in at ag org naigh eocaratacha. [1] (d) Liostaigh na 3 r ocht eile a bhfuil org naigh eocaratacha iontu. 1. _________________________ 2. _________________________ 3. _________________________ [2] A2B2S6 1628.03 5 [Tiontaigh an leathanach 4 Aill il ch laitheach ag l cas g ine singil is c is leis an phatr n diallaite ar olann caorach. I dtr ad caorach beirtear 800 uan agus b onn an patr n diallaite le tabhairt faoi deara in 4% acu. Tuigtear gur i gcothroma ocht Hardy Weinberg at an patr n diallaite sa phobal uan. Scr daitheoir Amh in Marcanna Athmharc (a) (i) Faigh an mhinic ocht choibhneasta don aill il diallaite agus don aill il neamh-dhiallaite i bpobal na n-uan. (Taispe in do chuid oibre sa sp s th os.) An mhinic ocht choibhneasta don aill il diallaite An mhinic ocht choibhneasta don aill il neamh-dhiallaite [2] (ii) Faigh minic ocht choibhneasta na n-uan a bheadh homaisigeach neamh-dhiallaite agus a bheadh heitrisigeach neamh-dhiallaite . (Taispe in do chuid oibre sa sp s th os.) Minic ocht choibhneasta na n-uan a bheadh homaisigeach neamh-dhiallaite Minic ocht choibhneasta na n-uan a bheadh heitrisigeach neamh-dhiallaite [2] (iii) R omh an l on den 800 uan a mbeife ag d il leo a bheith heitrisigeach don phatr n neamh-dhiallaite . (Taispe in do chuid oibre sa sp s th os.) L on na n-uan a bheadh heitrisigeach don phatr n neamh-dhiallaite A2B2S6 1628.03 6 [1] [Turn over Toisc go mb onn luach na holla laghd ag an phatr n diallaite , roghna onn an feirmeoir na huain nach bhfuil de dh th agus d olann s leis an bh ist ir iad. Sa ch ad ghl in eile b onn an patr n diallaite ina gcuid olla ag 2.8% de na huain. Leanann an feirmeoir leis an roghn go ceann c ig ghl in eile go laghda tear ar an phatr n diallaite go dt 1%. Scr daitheoir Amh in Marcanna Athmharc (b) M nigh an f th a bhfuil an patr n diallaite ann go f ill c gur lean an feirmeoir leis an roghn go ceann c ig ghl in. [2] A2B2S6 1628.03 7 [Tiontaigh an leathanach 5 (a) L n in nach f idir leo p ist a bheith acu ar bhealach ar bith eile, d fh adfadh siad cl r c ire la a bhfuil toirchi in vitro (IVF) i gceist ann a dh anamh. Sa l ar id seo th os tugtar achoimre ar na c imeanna a bh onn i gceist le IVF, i ndiaidh don bhean c ire il horm in a fh il ar dt s. Baintear uibheacha ar shi l le steallaire le linn obr ide. Scr daitheoir Amh in Marcanna Athmharc T irgeann an fear sampla de sheamhan. Measctar speirmeacha agus uibheacha i me n cu saothr ch in. Fanann uibheacha toirchithe sa mhe n saothr ch in ar feadh roinnt laethanta. Cuirtear dh cheann n tr cinn de shuthanna luatha isteach san taras tr d an fhaighean. Reoitear agus st r iltear na suthanna at f gtha. n trigin leachtach Foinse: Bradfield, Dodds, Dodds and Taylor AS Level Biology , Pearson Education, 2001 (i) Luaigh fadhb neamhthorth lachta amh in a bhfuil IVF f irsteanach di mar ch ire il. [1] (ii) C n f th a dtugtar c ire il horm in don bhean ag t s an chl ir IVF? [1] (iii) Luaigh f th amh in a bhf gtar an ubh thoirchithe sa mhe n saothr ch in ar feadh roinnt laethanta sula n-ionphlanda tear san taras . [1] A2B2S6 1628.03 8 [Turn over (iv) Luaigh fadhb amh in a d fh adfadh a bheith ann tr n os m n 2 cheann n 3 cinn de shuthanna a ionphland san taras. Scr daitheoir Amh in Marcanna Athmharc [1] (v) Cad eile is f idir leis an l n in a dh anamh, m s mian leo go f ill p iste a bheith acu, m theipeann ar an ch ad ch ire il seo? [1] (b) Me in saothr ch in inar f idir uibheacha a thoirchi in vitro, agus ina mbeadh suthanna ag forbairt ina dhiaidh sin, b onn albaimin s irim dhaonna iontu. Is pr it in fola albaimin a bh onn in s id mar chobhsaitheoir chun timpeallacht a mbeadh f s optamach inti a chruth . Deont ir fola a chuir an albaimin ar f il go dt le d ana . Anois, s idtear albaimin athchuingreach dhaonna a th irgtear ghiosta (Saccharomyces cerevisiae) i ndiaidh innealt ireacht gh initeach a dh anamh air, agus tuigtear go bhfuil s seo n os s bh ilte. (i) Luaigh d igh amh in a mbeadh an albaimin ag feidhmi chun timpeallacht na n-uibheacha n na suthanna a chobhs . [1] (ii) Tuigtear gur s bh ilte albaimin athchuingreach dhaonna a s id seachas an albaimin a fhaightear dheont ir daonna. Cad chuige, dar leat? [1] (iii) C n d igh, dar leat, a bhf adfa an gh in dhaonna do albaimin a ionchorpr isteach i gcealla giosta? [1] A2B2S6 1628.03 9 [Tiontaigh an leathanach 6 T speiceas den iasc cichlide, Tilapia nilotica, i Loch Turkana sa Ch inia. Scr daitheoir Amh in Marcanna Athmharc (a) Sa t bla seo th os taispe ntar an rang do Tilapia nilotica. Comhl naigh an t bla tr na hainmneacha do na 3 ghr pa thacsanoma ocha at ar iarraidh a chur isteach. R ocht Animalia Chordata Rang Osteichthyes Perciformes Fine Cichlidae Tilapia nilotica Speiceas [3] Le 10 000 bliain anuas bh odh leibh al an uisce sa loch ag ard is ag sli . T oile n bolc nach sa loch. Ar an oile n seo t cr it ar a l onadh le huisce agus h isc nuair a bh leibh al an uisce ard. Ach ar ball f gadh scoite amach nuair a d sligh leibh al an uisce. T Tilapia nilotica sa loch f in ach t speiceas eile, Tilapia vulcani, sa chr it ar ar an oile n. T an d speiceas iontach cos il lena ch ile thaobh cuma de, rud a thugann le fios go bhfuil sinsearach coiteann acu. Sa l ar id seo th os taispe ntar l arsc il den oile n agus an cr it ar b ite a bhfuil T. vulcani ann. Tilapia nilotica Tilapia vulcani Loch Turkana Foinse:Bradfield, Dodds, Dodds and Taylor A2 Level Biology , Pearson Education 2002 A2B2S6 1628.03 10 [Turn over (b) C n d igh, dar leat, a bhf adfadh an speiceas darb ainm Tilapia vulcani teacht ar an saol? Scr daitheoir Amh in Marcanna Athmharc [4] A2B2S6 1628.03 11 [Tiontaigh an leathanach 7 I gc s cat, is f idir go dt op lfa dath an ch ta ag p ire d aill il G agus g at nasctha go gn asach. Is an aill il G (ainmnithe XG) a riala onn fionnrua agus is an aill il g(Xg) a riala onn dubh. Sa riocht heitrisigeach cuirtear s os ar chait bhaineanna mar shliog nach (fionnadh a bhfuil fionnrua agus dubh meascaithe le ch ile ann). Scr daitheoir Amh in Marcanna Athmharc (a) Cad chuige nach bhfuil aon chat fireann ann at sliog nach? [1] B onn ifeacht na n-aill il G agus g modhn ag na haill il ag l cas eile, darb ainm an gh in chaolaithe (nach bhfuil nasctha go gn asach). D anann an aill il cheannasach D cinnte de go mb onn na haill il G agus g l iri ag an d ine ioml n datha at acu. F gann an aill il c laitheach d go n-athra tear an dath fionnrua go b nbhu agus an dath dubh go liath, agus tagann dath sliog nach adrom ar an heitrisiog t. (b) Luaigh feinit opa agus inscne an gh init opa ddXgXg. [1] (c) Cros ladh dh chat a raibh na g init opa seo a leanas acu. DdXGXg DdXgY Sa sliocht a th irgtear, t op il na comhr ireacha a mbeif ag s il leo i dt arma datha agus inscne. Tarraing l ar id gh initeach sa sp s seo th os le do chuid oibre a thaispe int. A2B2S6 1628.03 12 [Turn over Scr daitheoir Amh in Marcanna Athmharc [6] (d) Agus an sampla thuas maidir le dath c ta i gcait in s id agat, cuir s os ar an difear idir imoibri aill ile agus imoibri g ine. [2] A2B2S6 1628.03 13 [Tiontaigh an leathanach LEATHANACH B N A2B2S6 1628.03 14 [Turn over 8 F adtar bric dhea-dhathacha thriopl ideacha (Oncorhynchus mykiss) a th irgeadh tr uibheacha a thoirchi , uibheacha ina bhfuil an timthriall m iseach chosc ag turraing teasa n turraing br a thoirchi . Is n icl as d ubh dhiopl ideach, a chuingr onn ansin le n icl as de speirm hapl ideach, a th irgeann siog t triopl ideach. Scr daitheoir Amh in Marcanna Athmharc (a) Sa l ar id seo th os taispe ntar an chuma at ar fhuilchill dhearg iasc diopl ideach agus iasc triopl ideach. Cealla n icl atacha at ann. Diopl ideach Triopl ideach Triploid Diploid 10 m (i) Luaigh d igh amh in a bhfuil an fhuilchill dhearg n iasc difri il leis an fhuilchill dhearg mhamach. [1] (ii) T n icl as na fuilchille deirge n iasc triopl ideach n os m n n icl as na fuilchille deirge n iasc diopl ideach. M nigh cad chuige. [1] (b) N thig le horg naigh thriopl ideacha gaim it a th irgeadh agus ar an bhar sin t siad aimrid. Cad chuige nach dtig le horg naigh thriopl ideacha gaim it a th irgeadh? [1] A2B2S6 1628.03 15 [Tiontaigh an leathanach Sa ghraf seo th os taispe ntar bric bhaineanna dhea-dhathacha dhiopl ideacha agus bric bhaineanna dhea-dhathacha thriopl ideacha ag f s i dtaiscumar thar thr imhse dar fad 4 bliana go garbh. 2000 Scr daitheoir Amh in Marcanna Athmharc triopl ideach Me nmhais/g 1600 1200 diopl ideach 800 400 0 0 12 24 36 48 Aois an bhric bhaininn/m onna (c) Cuir s os ar na treochta a thaispe ntar sa ghraf. [3] A2B2S6 1628.03 16 [Turn over T na h isc thriopl ideacha uile aimrid agus l ir onn triopl idigh bhaineanna forbairt theoranta ubhag in sa d igh nach dt irgtear uibheacha. Gn th bhachtach eile a thagann isteach anseo, n l na triopl idigh chomh hionsaitheach c anna (ina gcoth mar shampla) leis na diopl idigh. Sa taiscumar seo ir onn an breac diopl ideach aib go gn asach sa tr bliain. B onn na c adta ubh dt irgeadh ag an diopl ideach baineann. Scr daitheoir Amh in Marcanna Athmharc (d) s id an t-eolas thuas leis na treochta at le sainaithint sa ghraf a mh ni . [3] Cuireadh an l on c anna de bhaineannaigh dhiopl ideacha agus thriopl ideacha isteach sa taiscumar (mar a raibh iascaireacht slaite ceadaithe). Agus na ceithre bliana istigh rugadh ar shampla d isc le heangacha agus n mar an gc anna iad l on na ndiopl ideach agus l on na dtriopl ideach sa sampla seo. Ba 2 : 1 go garbh c imheas na dtriopl ideach le diopl idigh. (e) Luaigh dh fh th a d fh adfadh a bheith ann leis an difear seo. ( s id aon eolas a bh ann cheana leis an cheist a fhreagairt.) 1. _________________________________________________________ ___________________________________________________________ ___________________________________________________________ 2. _________________________________________________________ ___________________________________________________________ _________________________________________________________ [2] A2B2S6 1628.03 17 [Tiontaigh an leathanach Roinn B Scr daitheoir Amh in Marcanna Athmharc Sa roinn seo t thar ag s il leis go dtabharfaidh t do fhreagra i bpr s lean nach, le l ar id mar thaca ocht leis san it ar cu sin. Cuirtear i gcuimhne duit go bhfuil suas le dh mharc sa cheist seo ag dul do chaighde n na cumars ide scr ofa. [2] 9 Breac cuntas ar mh is, agus m nigh a th bhachta at s i saolr anna agus an r l at aige maidir le h ags lacht gh initeach a chur chun cinn. [13] ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ 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Marcanna Athmharc _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ 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_____________________________________________________________ _____________________________________________________________ _____________________________________________________________ A2B2S6 1628.03 21 [Tiontaigh an leathanach Scr daitheoir Amh in _____________________________________________________________ Marcanna Athmharc _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ A2B2S6 1628.03 22 [Turn over SEO DEIREADH AN SCR DPH IP IR A2B2S6 1628 23 [Turn over Cuireadh isteach ar chead chun an t- bhar c ipchirt uile a at irgeadh. I gc sanna irithe is f idir n r irigh le CCEA teagmh il a dh anamh le h in ir c ipchirt agus beidh s s sta na hadmh lacha sin a f gadh ar l r a chur ina gceart amach anseo ach a chur ar an eolas. S 6/05 4500 302507(72)S

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Additional Info : Gce Biology May 2006 Assessment Unit A2 2 - Module 5: Reproduction, Genetics and Taxonomic Diversity (Irish Medium)
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