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In spite of the benefits offered by genetic screening for newborns,critics charge that patients' ____________________ rights are violated because the programs are mandatory.

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People with albinism carry two copies of the ____________________ allele (aa)and cannot make a pigment called ____________________ which is the principal pigment in skin,hair and eye color.

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Explain how Mendel compensated for the fact that he was unable to analyze mathematically how well the observed outcome of his cross fulfilled his predictions.

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Mendel recognized the problem ...

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In Mendel's pea plant experiment,the trait of pea shape was represented by the two variations ____________________ and ____________________.

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smooth; wrinkled wrinkled; smooth

Why is it unethical to use humans in experimental genetics? Explain your reasoning.

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Answers will vary.Students may...

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Define Ockham's razor and provide an example.

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Ockham's razor is based on a well-establ...

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In crosses involving complete dominance,the F2 genotypic ratio is 1:2:1 and is expressed as a phenotypic ____________________ ratio (express as x:x).

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3:1

In humans,hair texture is an incompletely dominant trait.Curly is the dominant genotype,wavy is heterozygous,and straight hair is recessive.What is the probable phenotypic ratio for a cross between a man with wavy hair and a woman with curly hair?


A) All wavy hair
B) 3/4 wavy hair; 1/4 straight hair
C) 1/2 wavy hair; 1/2 curly hair
D) All curly hair
E) 1/4 curly hair; 1/2 wavy hair; 1/4 straight hair

F) B) and D)
G) A) and E)

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In a monohybrid cross with complete dominance,the F2 offspring should contain ____.


A) two different phenotypes and two different genotypes
B) two different phenotypes and three different genotypes
C) three different phenotypes and two different genotypes
D) three different phenotypes and three different genotypes
E) two different phenotypes and one genotypeΒ 

F) A) and D)
G) B) and E)

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Pedigree construction can be a difficult task.

A) True
B) False

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Incomplete dominance is the expression of a phenotype that is intermediate to those of the parents.

A) True
B) False

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True

When two traits are analyzed separately,then the frequencies of each are combined to yield the observed phenotypic ratios,this confirms the principle of ____________________.

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independen...

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People with albinism carry two copies of the dominant allele (AA)and cannot make a pigment called melanin.

A) True
B) False

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When analyzing a cross involving two traits,each trait is analyzed separately,and then the frequencies of each are combined to yield the observed phenotypic ratios.

A) True
B) False

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The first genetic trait described in humans was ____.


A) albinism
B) dwarfism
C) Marfan syndrome
D) multiple sclerosis
E) brachydactyly

F) A) and C)
G) All of the above

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Mendel selected pea plants for his experiments because ____.


A) the offspring are infertile
B) others were also using pea plants for their experiments and this would allow data sharing
C) male and female flowers are on separate plants
D) they can be self-fertilized or artificially fertilized by hand
E) he was told by his superior that only pea plants were suitable for experimentation

F) A) and D)
G) B) and D)

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In his monohybrid crosses,Mendel deduced that one trait was recessive because that trait was ____.


A) not present in the F1 and did not reappear in the F2
B) present in the F1 and in the F2
C) not present in the F1 and reappeared in the F2
D) present only in the parents
E) present only in the F2

F) A) and B)
G) All of the above

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In humans,the gene for blood type has ____________________ (number)alleles and the A and B alleles are ____________________.

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Chi-square tests are used to determine whether a cross has been correctly constructed and analyzed.

A) True
B) False

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Although phenotypes may not follow predicted ratios,genotypes do obey the principles of ____________________.

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Mendelian ...

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