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This is
JEOPARDY!
Genetics
Watson 2001
Procedures for Today
Categories’ levels have certain point
values
Higher point values are generally more
difficult questions
You MUST state your response in the form
of a QUESTION
?????????????????????????????????
Watson 2001
Genetics
Way back
when…
What’s that
called?
Mutants
Chromosomes
Dominate!
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Hippocrates idea of body particles making
up gametes
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What is pangenensis?
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An early 19th century belief that traits
blend together
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What is
the Blending Hypothesis?
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An Austrian monk that studied inherited
traits in peas
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Who is
Gregor Mendel
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Gregor Mendel’s hybrid crosses of peas
revealed traits that seemed to dominate,
leading him to develop this “principle.”
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What is
the Principle of Dominance/Recessiveness?
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What disproves the Blending Hypothesis
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What is
recessive traits reappearing?
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The first, or parent generation
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What is
P generation?
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What identical alleles are called
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What is
Homozygous?
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Eggs and sperm, for example
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What are
gametes?
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Alternate forms of the same gene
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What are
alleles?
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A pair:
two different alleles for the same gene
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What is
heterozygous?
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Change in a single gene
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What is
gene mutation?
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Change in a whole chromosome
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What is
a chromosomal mutation?
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Part of a chromosome is missing
Question
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What is
a deletion?
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Part of a chromosome is reversed.
Question
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What is
an inversion?
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When two of these exchange portions,
a translocation occurs
Question
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What are
non-homologous chromosomes?
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An arrangement of chromosomes in a
particular order, used for study
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What is
a karyotype?
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The 1st 22 pairs of chromosomes
Question
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What are
autosomes?
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Examples of the 23rd pair of chromosomes
Question
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What are
X and y?
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Daily Double
What is your wager?
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Part of a chromosome that codes for a
particular trait
Question
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What is
a gene?
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The stage in which a karyotype is
photographed
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What is
prophase?
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When one allele’s traits can show, hiding
another allele’s traits
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What is
dominant/recessive?
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Both alleles in a heterozygote can be
partially expressed
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What is
incomplete dominance?
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The type dominance that allows the
offspring of a white cow and a red bull to
have a white/red haired calf (roan)
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What is
codominance?
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The only arrangement by which recessive
alleles are expressed
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What is
homozygous recessive?
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The incomplete dominant color of F1 when
P = Red (RR) x White (WW)
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What is
pink?
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Double Jeopardy
BLOOD
Sex-linking
Cross me
once
Cross me
twice
Oh-oh
200 200 200 200 200
400 400 400 400 400
600 600 600 600 600
800 800 800 800 800
1000 1000 1000 1000 1000
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The human alleles for blood
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What are
IA, IB, and i ?
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Carbo/protein molecules found on cells;
can make an immune response occur
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What are
antigens?
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A protein molecule that hunts for a particular
antigen
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What is
an antibody?
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The universal blood recipient type
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What is
type AB?
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The type dominance found in IA and IB blood
alleles
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What is
codominance?
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Where sex linked diseases’ alleles are
found
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What is
the X chromosome?
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A non-sex chromosome
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What is
An autosome?
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X – linked Dominant mutation (definition)
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What is
a mutation on the X chromosome that is
dominantly expressed?
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Examples of sex-linked disorders
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What are
hemophilia and colorblindness?
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The % of male children that will have
hemophilia if dad is normal and mom is a
carrier
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What is
50%?
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When only one trait is studied in a hybrid
cross
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What is
a monohybrid?
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A tool used to determine F1 genotypes
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What is
a Punnett square?
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What the expressed traits of an organism
is called
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What is
a phenotype?
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The phenotypic ratio of the F1,
when P = TT x tt
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What is
1:0?
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The phenotypic ratio of the F1,
when P = Tt x Tt
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What is
3:1?
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When two traits observed in a cross
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What is
a dihybrid?
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T=tall, t=short, G=green, g=yellow
The genotype of a fully heterozygous plant
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What is
TtGg?
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The possible gametes that could be
formed from TtGg
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What are
TG, Tg, tG, and tg?
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Daily Double
What is your wager?
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The phenotypic ratio of the cross of two
fully heterozygous dihybrids
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What is
9:3:3:1?
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The genotypic ratio of the cross of two
fully heterozygous dihybrids
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What is
1:2:1:2:4:2:1:2:1?
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Used as a tool to show all the known
phenotypes of an organism and its
ancestors
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What is
a pedigree?
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Can occur in Meiosis I or II, where the
wrong number of chromosomes are
separated during anaphase
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What is
nondisjunction?
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The meaning of 47,+21 (Downs syndrome)
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What is
47 chromosomes, having an extra 21st
chromosome?
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How Trisomy x is written
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What is
47, XXX?
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When “n” is a normal haploid number, it’s
the notation used when a gamete has one
more chromosome than it should have
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What is
n + 1?
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Final Jeopardy
What is your wager?
Write you name and wager on a piece of paper and
we will come around and collect them.
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Question for Final Jeopardy
How many genotypes are formed in
the F1 generation when you cross
the parents TtGg x ttgg?
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Answer for Final Jeopardy
TtGg x ttgg
tg
TG
Tg
tG
tg
TtGg Ttgg ttGg ttgg
FOUR
Watson 2001