Human Genetics
MargaretE.Vorndam,M.S.
Version
42-0068-00-01
LAB REPORTASSISTANT
Thisdocumentisnotmeanttobeasubstitute foraformallaboratoryreport.TheLabReport Assistantissimplyasummaryoftheexperimentâsquestions,diagramsifneeded,anddatatables
that
shouldbeaddressedinaformallabreport.
Theintentistofacilitatestudentâswriting
oflab reports by providing
this informationin an editable
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OBSERVATIONS
Data Table 1: Single-gene Traits of a Selected Population
Subject # >
1
2
3
4
5
6
7
8
9
10
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15
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XXFemale
XX
XYMale
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ff= attached
ff
RR,Rr = roller
R
rr = canât roll
SS,Ss = straight thumb
ss = bent thumb
ss
MM,Mm = hair
mm = no hair
mm
TT,Tt = lefton
top
T
tt= right
on top
LL,Ll = two
tendons
L
ll = three tendons
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Exercise
1:Patternsin Human Inheritance Traits
QUESTIONS
A. What observationscan be made about the collected
and charted data?
B. Are
any two people exactly the same? If so, how
closely are they related?
C. Isyourhypothesis
supportedbythefindings?Whatstatisticaltoolmighthelpyoutomake
this decision?
D. Inthetotalsthatyourecordedin Table1,didyoufindthatthenumberofdominantphenotypes
were
greater than, equal to, or less than the recessive
phenotypes?
E. Can
youexplainwhatpossible
genotypesaresuggestedbythispattern?Doesthisvaryby trait?
F. Would
you expect
this outcome? Why or why not?
G. Howwouldchanging
thelevelofthemappedtraitsaffectthechart?Forinstance,ifthealleles
for male or female were onthe
outer rim of the chart, rather
thaninthe middle,how wouldthe patternobserved differfrom
Figure 10-1?
H. List several
other traits that humans have that are
governed by
genetics.
I. Would
your data vary
if you went to another part of the world, for
instance,
China?
J. Why
might collected data
show differentpatternsfor
differentcultural
populations?
K. Wouldyouexpectthatthepatternwouldbedifferentifcollected100yearsagoinsteadof today? Why
or why not?
L. If you had percentages of dominant and recessive genes
present for the total
number of allelesofatraitfortheentireworld,wouldyouexpectthatpercentagetochangeover100years? Why
or why not?
Exercise2:Human
ChromosomesandtheHuman
Genome Project
RESULTS
Report on your
findings.Your report should be
limited to a page in length and may
incorporate the outline of research
points above.
QUESTIONS
A. What is the purpose of this exercise?
B. Whatistheprognosisongeneticdiseasesinthefuture?Doyoubelievethatmicrosurgeryto âfixâchromosomalaberrations willsomedaypreventthediseasesthatarelistedintheListof
GeneticallyMediated
Diseases in Humans?
LABORATORYSUMMARY
What have you
learned from doing this laboratory?
REFERENCES
Copyright © 2008 by Margaret E. Vorndam,
1413 County Road 671, Rye, CO
81069
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