hosted by; yours truly 100 200 400 300 400 punnett predictions curious crosses genetic gems...
TRANSCRIPT
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Hosted by;
Yours Truly
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Punnett Predictions
Curious Crosses
Genetic Gems
Pedigrees Problems
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Dominant and Recessive Alleles
The different forms of a gene are called ____________? Name the two types.
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Monohybrid predict the possible genotypes for one trait. Dihybrid cross involves
two traits.
What is the difference between a monohybrid and dihybrid cross?
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Heredity
The passing of traits from parents to offspring is called ____________ ?
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Male – SquareFemale – Circle
What symbols are used to represent male and female?
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Genotype – type of allelesPhenotype – physical appearance
What is a genotype versus a phenotype?
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C. SY, Sy, sY, and sy
The gametes of a plant of genotype SsYy should have the genotypes:
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C. A or B
What are the possible blood types of the offspring of a cross between individuals that are type AB and type O?
A. AB or O B. A, B, or O C. A or B D. A, B, AB, or O E. A, B, or AB
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Gregor Mendel
Who is the "father" of genetics?
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50% DD50% Dd
What would be the frequencies of genotypes produced by a cross of Dd x DD?
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A. 1/4 would be tall; 1/2 intermediate height;1/4 short The heterozygous offspring (Tt) would be of intermediate height.
In Mendel's experiments, if the gene for tall (T) plants was incompletely dominant over the gene for short (t) plants,
what would be the result of crossing two Tt plants?
A. 1/4 would be tall; 1/2 intermediate height; 1/4 short B. 1/2 would be tall; 1/4 intermediate height; 1/4 short. C. 1/4 would be tall; 1/4 intermediate height; 1/2 short. D. All the offspring would be tall. E. All the offspring would be intermediate.
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D. Father's Father.
Which of a women's grandparents could not be the source of any of the genes on either of her X-
chromosomes? A.Mother's Father B. Father's Mother C. Mother's MotherD. Father's Father E. Mother's Mother and Mother's Father
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Males – X & Y
Which parent determines the gender of their offspring?
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0% All of the males and all of the females are red-eyed.
In a cross between a pure bred, red-eyed female fruit fly and a white-eyed male, what percent of the male
offspring will have white eyes? (white eyes are X-linked, recessive)
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E. SsYY
Which of the following genotypes would you not expect to find among the offspring of a SsYy x ssyy test cross: A. ssyy
B. SsYy C. Ssyy D. ssYy E. SsYY
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All types are possible A, B, AB, O.
A woman with type A blood and a man with type B blood could potentially have offspring with which of the following
blood types?
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Circle – openParents - Dd
A mother and a father who are sick with a dominant disease (D) will produce a normal girl. What shape is represented on a pedigree for this girl and what are her parents genotypes? Indicate whether it is shaded or not
shaded.
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C. 50% Half the sons would be expected to inherit the allele
from their mother and be afflicted. Half the daughters would be carriers like their mothers.
A human female "carrier" who is heterozygous for the recessive, sex-linked trait causing red-green color blindness (or alternatively, hemophilia), marries a normal male. What proportion of their male progeny will have red-green color blindness (or alternatively, will
be hemophiliac)? A.100% B.75%
C. 50% D. 25% E. 0%
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5,2
C. yy A cross with the homozygous recessive (yy) is a test cross. If the parent of unknown genotype is heterozygous (Yy),
half of the offspring will have the recessive trait. The unknown genotype could also be
determined by a cross with a known heterozygote (Yy).
To identify the genotype of yellow-seeded pea plants as either homozygous dominant (YY) or heterozygous
(Yy), you could do a test cross with plants of genotype:A. y
B. Y C. yy D. YY E. Yy
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C. Cross between two individuals
of the parental generation.
The first filial generation (F1) is the results of ______.
A.Cross pollination among parents and the next generation.
B.Cross between the offspring of a parental cross.
C.Cross between two individuals of the parental generation.
D.Many crosses between parental stock.
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A. autosomal dominant
A human geneticist determined the pedigree shown in the diagram with filled symbols showing the affected
individuals. How is this pattern of inheritance described?
A.autosomal dominant B. autosomal recessive C. sex-linked recessive D.sex-linked dominantE. none of these