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Monohybrid
Crosses
Other Crosses
I
Other
Crosses II
Random
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Physical Appearance of an individual
Define phenotype.
Row 1, Col 1
Two
How many traits does a
dihybrid cross look at?
1,2
On the sex chromosome or X chromosome
Where are sex linked genes
located?
1,3
Homozygous
An individual possess two identical
alleles for a trait. This person
is said to be __________ for the
trait.
1,4
4/4 will be Bb or heterozygous
Brown eyes is dominant to blue
eyes. A woman with brown eyes
who is homozygous,
marries a man with blue eyes.
Write out the genotypic ratio.
2,1
Ss Gg X ss yy
Smooth is dominant over wrinkled
Green is dominant over yellow
What are genotypes of the parents
If a heterozygous smooth
Heterozygous green is crossed with
A wrinkled yellow?
2,2
Incomplete Dominance
Mary has wavy hair but her
Father has straight and mother
Has curly. What type of
Inheritance is this?
2,3
Principle of Independent Assortment
Which of Mendel’s laws focuses
on the idea that traits are
Inherited separately.
2,4
2/4 Ll; 2/4 ll 2/4 long and 2/4 short
In dogs, long hair is dominant
To short hair. Please give the
Genotypic and phenotypic ratios
Of a short hair dog crossed with
A heterozygous long hair dog
3,1
codominance
When a brown cow is mated with
A white cow, a roan (spotted) cow
Is produced. What kind of inheritance
Is this?
3,2
O or B
A woman with blood type O marries a man
with blood type B. What are the possible
blood types of their offspring?
3,3
Used to determine if dominant individual is homozygous
or heterozygous mate with a homozygous recessive
Define a test cross.
3,4
Determine the probable outcome of a cross
Why do we use a punnett square?
4,1
Answers will vary
Name two diseases or conditions
that are sex linked
4,2
100%
A woman does not have hemophilia
in her family but she marries a man
who has hemophilia. What is the
chance that their son will be normal?
4,3
One trait is dominant over the other and covers that trait
Define the principle of dominance.
4,4
Blending of trait in heterozygous form
How does incomplete
Dominance differ from a “normal”
Punnett square?
5,1
four
In a dihybrid cross, if the first
Parent is heterozygous and the
Second is recessive for both traits,
How many different genotypes are
Possible in the offspring?
5,2
Yes because the parents can be heterozygous and both
Pass on O allele
A woman with blood type A
Marries a man with blood type B.
Their son has O blood. Is this
Possible? Explain
5,3
A, B, AB
A man has AB blood and a woman
Has B Blood. What are the
Possible blood types their
Children could have?
5,4
Final Jeopardy
Place your wagers and team name on
sheet
Question
• If R=red and W= white, describe a flower in
which the traits are incomplete dominant
and codominant?