Transcript Genetics Jeopardy

Vocabulary
Mendelian
Genetics
Pedigrees
NonMendelian
Genetics
Potpourri
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Gene Pair
Answer: Allele
Physical Appearance of
a trait
Answer: Phenotype
Diagram that shows the history of
a trait as it is passed from one
generation to the next
Answer: Pedigree
Structure in the cell that
contains the genetic information
Answer:
Chromosome
Trait whose phenotype is influenced
by more than one gene
Answer: Polygenic
BB
Answer: Pure Dominant
Homozygous
Hairy knuckles are dominant to
non-hairy knuckles in humans
HH__ Hh __ hh __
Answer: Hairy, Hairy, Nonhairy
The dominant allele (F) codes for grey fur and
the recessive allele (f) codes for black fur. The
female dog has black fur. The male dog has
black fur. Figure out the phenotypes and
genotypes of their possible puppies by using a
Punnett Square.
Answer:
In fruit flies, red eyes are dominant (E). White eyes are
recessive (e). If the female fly has white eyes and the
male fly has homozygous dominant red eyes, what are
the possible phenotypes and genotypes of their
offspring?
Answer:
Widow’s peak is dominant.
Look at the phenotypes of Beyoncé and Jay Z.
If these two had children, could they have
children with a widow’s peak? Why or why
not? Use a Punnett Square to explain your
answer.
Answer:
Which members of the family above are
afflicted with Huntington’s Disease? I1,
II2, II3, II7, III3
Answer: I1, II2, II3, II7,
III3
There are no carriers for Huntington’s Disease- you
either have it or you don’t.
With this in mind, is Huntington’s disease caused by
a dominant or recessive trait?
Answer: Dominant
The pedigree to the right shows a family’s pedigree
for Hitchhiker’s Thumb. Is this trait
dominant or recessive?
Answer: Recessive
Is it possible for individual IV-2 to be a carrier? Yes
Why? b/c parents were heterozygous
Answer: Yes because parents
were heterozygous
How are individuals III-4
and III-5 related?
Answer: Cousins/Marriage
Blood Type
Homozygous for the “B” allele
Answer: I I
B B
Pretend that Brad Pitt is homozygous for the
type B allele, and Angelina Jolie is type “O.”
What are all the possible blood types of their
baby?
Answer:
In snapdragons, flower color is controlled by incomplete
dominance. The two alleles are red (R) and white (R’).
The heterozygous genotype is expressed as pink. A
pink-flowered plant is crossed with a white-flowered
plant. What is the probability of producing a pinkflowered plant? ____%
Answer:
Two short-tailed (Manx) cats are bred together. They produce three
kittens with long tails, five short tails, and two without any tails.
From these results, how do you think tail length in these cats are
inherited? Show the genotypes for both the parents and the
offspring to support your answer.
Answer:
Show the cross of a man who has hemophilia
with a woman who is a carrier.
What is the probability that their children will
have the disease?
Answer:
23rd chromosome pair
Answer: Sex chromosome
What kind of trait is colorblindness?
Answer: Sex-linked/recessive
A genetic situation in which one allele
does not completely dominate another
allele, and therefore results in a new
phenotype.
Answer: Incomplete Dominance
Two parents think their baby was switched at the hospital. Its 1968,
so DNA fingerprinting technology does not exist yet. The mother
has blood type “O,” the father has blood type “AB,” and the baby
has blood type “B.”
Mother’s genotype: _______ Father’s genotype: _______
Baby’s genotype: ______ or ________
Punnett square showing all possible genotypes for children
produced by this couple. Was the baby switched?
Answer:
In cats, the gene for calico (multicolored) cats is codominant.
Females that receive a B and an R gene have black and orange
splotches on white coats. Males can only be black or orange, but
never calico. Here’s what a calico female’s genotype would look
like XB XR 10. Show the cross of a female black cat, with a male
orange cat. What percentage of the kittens will be calico and
female? _____ What color will all the male cats be? _____
Answer: