SAT单科资料-生物-Biology-EM-模拟测试题与详解-第二套.pdf

BiologyE/MSample

Test2

WithAnswersandAnalysis

Directions:Eachquestionorincompletestatementisfollowedbyfive

possibleanswersorcompletions.ForbothBiology-EandBiology-M,select

theonechoicethatisthebestanswerandfillinthecorrespondingspaceon

theanswersheet.

1.Acollegestudentstudyinggeneticsisassignedasemester-longproject

byherprofessor,whogivesher4blackand4whiteguineapigs.There

are2maleand2femaleguineapigsofeachcolor.Theprofessortells

thestudentthattheguineapigsineachgroupareallofthesame

genotype.Theprojectistodeterminethegenotypeoftheblackguinea

pigs.Thestudentdoessomepreliminarylibraryresearchanddiscovers

thatwhitefuringuineapigsisrecessiveandthatblackfurisdominant.

Whichofthefollowingprocedureswouldbethebestoneforthestudent

tocarryouttodeterminethegenotypeofanyoftheblackguineapigs?

(Donotconsidercostasafactorinthisstudy.)

(A)Karyotype

(B)Bloodanalysisofthechromosomestoseeifthereisevidenceof

nondisjunction

(C)Analysiswithanelectronmicroscopetoseeifanyoftheblackfur

containsanywhiteflecksthatcannotbeseenwiththeeyeorwitha

lightmicroscope

(D)Crossanytwooftheblackanimalstoseeifanyoffspringarewhite

(E)Crossanyoftheblackanimalswithawhiteanimaltoseeifanyof

theoffspringarewhite

2.Fixedactionpatternsareinitiatedbyexternalstimulicalled

(A)agonisticbehavior

(B)altruisticbehavior

(C)signstimuli

(D)associativelearning

(E)initialvisualimprinting

3.Lichens

(A)aregreenplants

(B)arealgae

(C)arethemajorproducerintheopenocean

(D)areamutualisticassociationbetwee