Our Genes, Our Selves Jeopardy
OFFSPRING
GENETICS
LIFE’S LITTLE
BLUEPRINTS
HUH….WHAT’S
THAT MEAN?
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OFFSPRING 100
• Budding, cloning, & cell division are all
examples of ___________ reproduction.
The genes of such offspring are always
____________ to the parent organisms.
• Answer: Asexual, Identical
OFFSPRING 200
• In ____________ reproduction, when sex
cells unite, we call this _____________,
and the resulting cell that begins to divide
and develop into an offspring of the two
parents inherits ½ of its _____________
from each parent.
• Answer: Sexual, Fertilization,
Chromosomes or Genes
OFFSPRING 300
• Offspring from asexual reproduction are
considered _________ because they are
genetically identical to the parent (unless a
mutation occurs in a gene or chromosome).
• Answer: Clones
OFFSPRING 400
• Humans have two copies of each chromosome (known
as chromosome pairs).
• A) How many pairs of chromosomes do humans have?
B) What is the total number of chromosomes that
humans have?
• Answer: A) 23 chromosome pairs B) 46 chromosomes
• BONUS 50 POINTS: It is the 23rd chromosome pair
that determines sex. What chromosome pair results in a
female and what chromosome pair results in a male?
• Answer: Female=(XX), Male=(XY)
OFFSPRING 500
• In addition to single-celled organisms that reproduce
asexually, some multicellular organisms can reproduce
both sexually and asexually. For example, taking a
clipping from a plant and placing it in water can
asexually reproduce (grow) an offspring that is
genetically identical to the parent plant.
• A) How does the plant reproduce sexually? B) Would
it’s offspring be genetically identical to the parent
plants? Explain!
• Answer: A) Two plants are necessary for cross
pollination of male and female sex cells. B) The
offspring would not be identical because it receive ½ of
its genes from each parent plant.
GENETICS 100
• A) What is the name of the monk/geneticist
that studied genetic inheritance patterns?
B) Did his experiments involve sexual or
asexual reproduction?
• Answer: A) Gregor Mendel B) Sexual
reproduction
GENETICS 200
• A Punnet square is a tool used by geneticist
that shows all the possible alleles (or versions
of a gene) that can be inherited by the
offspring of two parents.
• If a heterozygous blue-tailed critter (Bb) is
crossed with a homozygous orange-tailed
critter (bb), what is the probability of bluetailed to orange-tailed offspring being born.
• Answer: 2 : 2 or 1 : 1 ratio (50% chance for
blue or orange.
GENETICS 300
• (Multiple Choice) A pedigree is used by
geneticists to: (A, B, C, or D)
• A) predict the probability of offspring
inheriting traits.
• B) experiment with cross breeding organisms.
• C) trace inheritance of traits over generations of
families.
• D) identify unknown individuals.
• Answer: C) trace inheritance of traits over
generations of families.
GENETICS 400
• (Modified True/False) DNA fingerprinting is
used to identify relationships between
individuals and to help solve crimes when
criminals leave DNA at a crime scene because
all humans have the same DNA, except for
identical siblings.
• Answer: False—no two humans have the same
DNA, except for identical siblings.
GENETICS 500
• Pedigrees use circles and squares to differentiate
males from females—
• A) which shape is used for females?
• B) what is a carrier?
• Answer: A) Circles=Female, B) a carrier is one
who inherits a gene for a recessive trait, but they
don’t have the trait. They are heterozygous and
have one dominant and one recessive allele.
LIFE’S LITTLE BLUEPRINTS 100
• (Multiple Choice) The inherited factors that
control/determine the traits of living organisms
are: (A, B, C, or D)
• A) Parents
• B) Genes
• C) Pants
• D) Genes + Environment
Answer: B Genes—environmental factors are
not inherited
LIFE’S LITTLE BLUEPRINTS 200
• (Multiple Choice) What factors can affect a
persons physical traits? (A, B, C, D, or E)
• A) one gene
• B) multiple genes
• C) the environment
• D) A & B only
• E) All of the above
• Answer: E) All of the above
LIFE’S LITTLE BLUEPRINTS 300
• List the following structures from smallest to
largest: chromosome, gene, blood cell, DNA,
nucleus, D-cell battery.
• Answer:
•
•
•
•
•
•
gene
DNA
Chromosome
Nucleus
Blood cell
D-cell battery
LIFE’S LITTLE BLUEPRINTS 400
•
•
why?
Answer: .
LIFE’S LITTLE BLUEPRINTS 500
• .
• Answer: g
HUH…WHAT’S THAT MEAN? 100
• Probability
• Answer:.
HUH…WHAT’S THAT MEAN? 200
• Mutation?
• Answer: n
HUH…WHAT’S THAT MEAN? 300
• Simple dominance / recessive pattern?
• Answer: d
HUH…WHAT’S THAT MEAN? 400
• In Mendel’s work with pea plants, the characteristic for
stem height had the traits “tall” & “short.” He learned
that there was a “simple dominant/recessive pattern” with
the tall trait determined by the dominant allele and the
short trait determined by the recessive allele.
• A) If “t” is the letter used to represent alleles, what are
the possible allele pairs for “tall stem” and “short stem”
pea plants? B) Which trait(s) would be “homozygous,”
and which trait(s) would be “heterozygous?”
• Answer:
• A) Tall=(TT) & (Tt), Short=(tt)
• B) Homozygous Dominant tall (TT) & Homozygous
Recessive short (tt), Heterozygous Dominant tall (Tt).
HUH…WHAT’S THAT MEAN? 500
• Incomplete & Co-Dominance?
• Answer:)