power study: probability and genetics quiz for mrs. schworer
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Power Study:Probability and Genetics Quiz
For Mrs. Schworer
TermsMatch the terms that goes together
DefinitionsPhenotype - the set of observable characteristics of an
individual resulting from the interaction of its genotype with the environment. (trait)
Genotype - he genetic constitution of an individual organism. (Allele)
Homozygous - having the two genes that are the same. (Purebred)
Heterozygous – having two genes that are different. (Hybrid)
Heterozygous or Homozygous
Classify each of the following gene pairs as heterozygous or homozygous
RR _________ ff __________
Tt __________ Ll __________
Homozygous
Heterozygous
Homozygous
Heterozygous
TRAIT DOMINANT GENE RECESSIVE GENE
Hair Color Brown - B Blonde - b
Widows Peak With Widows Peak - W Without Widows Peak - w
Dimples With Dimples - D Without Dimples - d
Purebred brown hair color - _______
Hybrid with widows peak:______
Heterozygous with dimples: ______
Homozygous blonde hair color: ______
BB
Ww
Dd
bb
Round eyes (R) are dominant to Oval eyes (r) in Mrs. Schworer’s family. Give the PHENOTYPE for
each of the genotypes below.
RR - ______________
Rr - _______________
rr - _______________
Round eyes
Round eyes
Oval eyes
Long nose – LShort nose - l
Donald Duck is heterozygous for a long nose. He recently married Daffy Duck with homozygous for a stubby nose.
Donald Duck (heterozygous for long nose) = __________
Daffy Duck (homozygous for stubby nose) = __________
COMPLETE THE PUNNETT SQUARE
Ll
ll
L l
l
l
Ll
Ll ll
ll
Percentage for long nose? ______% Percentage for stubby nose________%
50 50
What is Codominant?Codominance is ……
A. Codominance is when a heterozygous organism will express or show both dominant alleles for a trait. B. Codominance is when nothing is dominant.
C. Codominance is when a homozygous organism will express or show both dominant alleles for a trait.
Codominance In horses theres is a codominance; (B) is the symbol for black,
(W) is they symbol for white, and (BW) is the symbol for black and white.
Cross a homozygous black male horse with a homozygous white female horse.
Genotypes of offspring:
______________________
Phenotypes of offspring:
______________________BW Black and White
W
W
B B
BW BW
BW BW
Multiple Alleles If Ryan has the blood type O and is married with Deanna who
has the blood type A, she would be homozygous for this blood type, what blood types could their children have? Remember to use I , I , and I for the alleles.
A B
i i
IA
IA
IA i IA i
IA iIA i
The children would have blood type(s): ________________A
Incomplete DominanceBob the gardener is growing roses that come in
the colors red (RR), white(WW), and pink (RW).
What would happen if Bob crossed a pink flower with a red flower?
R W
R
R
RR
RR
RW
RW
How many plants would be red? ___________%
How many plants would be white? _________%
How many plants would be pink? __________%
50
0
50
Continue to look over your worksheets!
Keep practicing past work and reviewing your terms!
BEST OF LUCK! Take your time on the quiz and I know you will all do great