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A) all white flowers in the F1 generation
B) all purple flowers in the F1 generation
C) all purple flowers in the F1 generation but a lighter purple than in the parents
D) mostly purple flowers in the F1 generation, with an occasional white flower
E) half of the plants having purple flowers and half having white flowers
Correct Answer
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Correct Answer
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A) achondroplasia
B) cystic fibrosis
C) albinism
D) sickle-cell anemia
E) Down syndrome
Correct Answer
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Correct Answer
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A) multiple alleles; epistasis
B) incomplete dominance; multiple alleles
C) polygenic inheritance; pleiotropy
D) pleiotropy; polygenic inheritance
E) incomplete dominance; pleiotropy
Correct Answer
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Correct Answer
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Premises
locus
Responses
The first generation of offspring from the cross of two true-breeding parents
The genetic makeup of an organism
The likelihood of something occurring as a matter of chance
An F1 heterozygote (for a single trait)
When alleles at one locus mask the expression of alleles at a different locus
True-breeding plants used in an initial cross
The result of a cross between two first-generation organisms
When one allele cannot completely mask the effects of another allele
Any organism with 2 identical alleles of a gene
An organism that is heterozygous for two different traits
When different genes contribute to a particular phenotype
Where an allele is found on a chromosome
When a single allele has multiple phenotypic effects
When displayed traits are unchanged over multiple generations
The physical traits of an organism
The allele that is expressed only if two identical copies are present
Any organism with 2 different alleles of a gene
When one allele masks the effect of another
Correct Answer
Premises
Responses
The first generation of offspring from the cross of two true-breeding parents
The genetic makeup of an organism
The likelihood of something occurring as a matter of chance
An F1 heterozygote (for a single trait)
When alleles at one locus mask the expression of alleles at a different locus
True-breeding plants used in an initial cross
The result of a cross between two first-generation organisms
When one allele cannot completely mask the effects of another allele
Any organism with 2 identical alleles of a gene
An organism that is heterozygous for two different traits
When different genes contribute to a particular phenotype
Where an allele is found on a chromosome
When a single allele has multiple phenotypic effects
When displayed traits are unchanged over multiple generations
The physical traits of an organism
The allele that is expressed only if two identical copies are present
Any organism with 2 different alleles of a gene
When one allele masks the effect of another
Premises
The first generation of offspring from the cross of two true-breeding parents
The genetic makeup of an organism
The likelihood of something occurring as a matter of chance
An F1 heterozygote (for a single trait)
When alleles at one locus mask the expression of alleles at a different locus
True-breeding plants used in an initial cross
The result of a cross between two first-generation organisms
When one allele cannot completely mask the effects of another allele
Any organism with 2 identical alleles of a gene
An organism that is heterozygous for two different traits
When different genes contribute to a particular phenotype
Where an allele is found on a chromosome
When a single allele has multiple phenotypic effects
When displayed traits are unchanged over multiple generations
The physical traits of an organism
The allele that is expressed only if two identical copies are present
Any organism with 2 different alleles of a gene
When one allele masks the effect of another
Responses
A) heterozygous
B) homozygous recessive
C) homozygous dominant
D) self-fertilized
E) dihybrid
Correct Answer
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Correct Answer
verified
Premises
human height
Responses
epistasis
codominance
incomplete dominance
polygenic inheritance
dominance
Correct Answer
Premises
Responses
epistasis
codominance
incomplete dominance
polygenic inheritance
dominance
Premises
epistasis
codominance
incomplete dominance
polygenic inheritance
dominance
Responses
A) 3/4
B) 9/64
C) 1/64
D) 27/64
E) 1/2
Correct Answer
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Correct Answer
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A) epistasis
B) incomplete dominance
C) polygenic inheritance
D) multiple alleles
E) pleiotropy
Correct Answer
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Correct Answer
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A) only two alleles of the gene exist in the population
B) more than two alleles of the gene are present in any given individual
C) more than two alleles of the gene are present in the population
D) one or more of the alleles is epistatic to the other(s)
E) the alleles must be incompletely dominant
Correct Answer
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Correct Answer
verified
Premises
genotype
Responses
The allele that is expressed only if two identical copies are present
The physical traits of an organism
An organism that is heterozygous for two different traits
The result of a cross between two first-generation organisms
Where an allele is found on a chromosome
When a single allele has multiple phenotypic effects
True-breeding plants used in an initial cross
Any organism with 2 different alleles of a gene
When different genes contribute to a particular phenotype
When one allele masks the effect of another
When one allele cannot completely mask the effects of another allele
When alleles at one locus mask the expression of alleles at a different locus
The likelihood of something occurring as a matter of chance
The genetic makeup of an organism
When displayed traits are unchanged over multiple generations
Any organism with 2 identical alleles of a gene
The first generation of offspring from the cross of two true-breeding parents
An F1 heterozygote (for a single trait)
Correct Answer
Premises
Responses
The allele that is expressed only if two identical copies are present
The physical traits of an organism
An organism that is heterozygous for two different traits
The result of a cross between two first-generation organisms
Where an allele is found on a chromosome
When a single allele has multiple phenotypic effects
True-breeding plants used in an initial cross
Any organism with 2 different alleles of a gene
When different genes contribute to a particular phenotype
When one allele masks the effect of another
When one allele cannot completely mask the effects of another allele
When alleles at one locus mask the expression of alleles at a different locus
The likelihood of something occurring as a matter of chance
The genetic makeup of an organism
When displayed traits are unchanged over multiple generations
Any organism with 2 identical alleles of a gene
The first generation of offspring from the cross of two true-breeding parents
An F1 heterozygote (for a single trait)
Premises
The allele that is expressed only if two identical copies are present
The physical traits of an organism
An organism that is heterozygous for two different traits
The result of a cross between two first-generation organisms
Where an allele is found on a chromosome
When a single allele has multiple phenotypic effects
True-breeding plants used in an initial cross
Any organism with 2 different alleles of a gene
When different genes contribute to a particular phenotype
When one allele masks the effect of another
When one allele cannot completely mask the effects of another allele
When alleles at one locus mask the expression of alleles at a different locus
The likelihood of something occurring as a matter of chance
The genetic makeup of an organism
When displayed traits are unchanged over multiple generations
Any organism with 2 identical alleles of a gene
The first generation of offspring from the cross of two true-breeding parents
An F1 heterozygote (for a single trait)
Responses
A) cystic fibrosis
B) albinism
C) sickle-cell anemia
D) achondroplasia
E) schizophrenia
Correct Answer
verified
Correct Answer
verified
A) We inherit traits from only one parent.
B) Traits are inherited via a mixing of parental blood.
C) Parental chromosomes undergo recombination to produce blended chromosomes in their offspring.
D) Traits may skip a generation due to the blending of paternal and maternal phenotypes.
E) Paternal and maternal chromosomes separate independently in meiosis, creating gametes with a blend of paternal and maternal chromosomes.
Correct Answer
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Correct Answer
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A) gene; gametes
B) base; homozygous genes
C) nucleotide; genes
D) locus; homologous chromosomes
E) sister chromatid; homologous chromosomes
Correct Answer
verified
Correct Answer
verified
Premises
true breeding
Responses
The result of a cross between two first-generation organisms
The genetic makeup of an organism
An organism that is heterozygous for two different traits
When one allele cannot completely mask the effects of another allele
An F1 heterozygote (for a single trait)
The likelihood of something occurring as a matter of chance
The allele that is expressed only if two identical copies are present
Where an allele is found on a chromosome
When different genes contribute to a particular phenotype
When alleles at one locus mask the expression of alleles at a different locus
When displayed traits are unchanged over multiple generations
Any organism with 2 different alleles of a gene
Any organism with 2 identical alleles of a gene
The first generation of offspring from the cross of two true-breeding parents
When a single allele has multiple phenotypic effects
When one allele masks the effect of another
True-breeding plants used in an initial cross
The physical traits of an organism
Correct Answer
Premises
Responses
The result of a cross between two first-generation organisms
The genetic makeup of an organism
An organism that is heterozygous for two different traits
When one allele cannot completely mask the effects of another allele
An F1 heterozygote (for a single trait)
The likelihood of something occurring as a matter of chance
The allele that is expressed only if two identical copies are present
Where an allele is found on a chromosome
When different genes contribute to a particular phenotype
When alleles at one locus mask the expression of alleles at a different locus
When displayed traits are unchanged over multiple generations
Any organism with 2 different alleles of a gene
Any organism with 2 identical alleles of a gene
The first generation of offspring from the cross of two true-breeding parents
When a single allele has multiple phenotypic effects
When one allele masks the effect of another
True-breeding plants used in an initial cross
The physical traits of an organism
Premises
The result of a cross between two first-generation organisms
The genetic makeup of an organism
An organism that is heterozygous for two different traits
When one allele cannot completely mask the effects of another allele
An F1 heterozygote (for a single trait)
The likelihood of something occurring as a matter of chance
The allele that is expressed only if two identical copies are present
Where an allele is found on a chromosome
When different genes contribute to a particular phenotype
When alleles at one locus mask the expression of alleles at a different locus
When displayed traits are unchanged over multiple generations
Any organism with 2 different alleles of a gene
Any organism with 2 identical alleles of a gene
The first generation of offspring from the cross of two true-breeding parents
When a single allele has multiple phenotypic effects
When one allele masks the effect of another
True-breeding plants used in an initial cross
The physical traits of an organism
Responses
A) In incomplete dominance, the recessive allele cannot be detected; in codominance, the expression of the recessive allele is apparent.
B) In incomplete dominance, it is possible to detect the expression of a recessive allele; in codominance, both alleles contribute equally to the phenotype.
C) In codominance, it is possible to detect the expression of a recessive allele; in incomplete dominance, both alleles contribute equally to the phenotype.
D) In incomplete dominance, it is possible to detect the expression of the dominant allele; in codominance, two different genes contribute to a single phenotype.
E) The two terms are synonymous.
Correct Answer
verified
Correct Answer
verified
Premises
heterozygote
Responses
The result of a cross between two first-generation organisms
The physical traits of an organism
The first generation of offspring from the cross of two true-breeding parents
When one allele cannot completely mask the effects of another allele
Any organism with 2 different alleles of a gene
When one allele masks the effect of another
Any organism with 2 identical alleles of a gene
An organism that is heterozygous for two different traits
True-breeding plants used in an initial cross
The genetic makeup of an organism
When different genes contribute to a particular phenotype
When alleles at one locus mask the expression of alleles at a different locus
When displayed traits are unchanged over multiple generations
An F1 heterozygote (for a single trait)
The likelihood of something occurring as a matter of chance
When a single allele has multiple phenotypic effects
Where an allele is found on a chromosome
The allele that is expressed only if two identical copies are present
Correct Answer
Premises
Responses
The result of a cross between two first-generation organisms
The physical traits of an organism
The first generation of offspring from the cross of two true-breeding parents
When one allele cannot completely mask the effects of another allele
Any organism with 2 different alleles of a gene
When one allele masks the effect of another
Any organism with 2 identical alleles of a gene
An organism that is heterozygous for two different traits
True-breeding plants used in an initial cross
The genetic makeup of an organism
When different genes contribute to a particular phenotype
When alleles at one locus mask the expression of alleles at a different locus
When displayed traits are unchanged over multiple generations
An F1 heterozygote (for a single trait)
The likelihood of something occurring as a matter of chance
When a single allele has multiple phenotypic effects
Where an allele is found on a chromosome
The allele that is expressed only if two identical copies are present
Premises
The result of a cross between two first-generation organisms
The physical traits of an organism
The first generation of offspring from the cross of two true-breeding parents
When one allele cannot completely mask the effects of another allele
Any organism with 2 different alleles of a gene
When one allele masks the effect of another
Any organism with 2 identical alleles of a gene
An organism that is heterozygous for two different traits
True-breeding plants used in an initial cross
The genetic makeup of an organism
When different genes contribute to a particular phenotype
When alleles at one locus mask the expression of alleles at a different locus
When displayed traits are unchanged over multiple generations
An F1 heterozygote (for a single trait)
The likelihood of something occurring as a matter of chance
When a single allele has multiple phenotypic effects
Where an allele is found on a chromosome
The allele that is expressed only if two identical copies are present
Responses
A) 1/4
B) 1/2
C) 3/4
D) 1
E) 0
Correct Answer
verified
Correct Answer
verified
A) 1/4
B) 1/2
C) 3/4
D) 1
E) 0
Correct Answer
verified
Correct Answer
verified
A) R-MM * R-mm
B) RRMM * rrmm
C) R-M- * R-M-
D) rrMM * RRmm
E) R-M- * rrmm
Correct Answer
verified
Correct Answer
verified
Premises
polygenic inheritance
Responses
The first generation of offspring from the cross of two true-breeding parents
The physical traits of an organism
An F1 heterozygote (for a single trait)
When a single allele has multiple phenotypic effects
Where an allele is found on a chromosome
When alleles at one locus mask the expression of alleles at a different locus
Any organism with 2 different alleles of a gene
The result of a cross between two first-generation organisms
The genetic makeup of an organism
When displayed traits are unchanged over multiple generations
When one allele masks the effect of another
An organism that is heterozygous for two different traits
The allele that is expressed only if two identical copies are present
The likelihood of something occurring as a matter of chance
When one allele cannot completely mask the effects of another allele
Any organism with 2 identical alleles of a gene
When different genes contribute to a particular phenotype
True-breeding plants used in an initial cross
Correct Answer
Premises
Responses
The first generation of offspring from the cross of two true-breeding parents
The physical traits of an organism
An F1 heterozygote (for a single trait)
When a single allele has multiple phenotypic effects
Where an allele is found on a chromosome
When alleles at one locus mask the expression of alleles at a different locus
Any organism with 2 different alleles of a gene
The result of a cross between two first-generation organisms
The genetic makeup of an organism
When displayed traits are unchanged over multiple generations
When one allele masks the effect of another
An organism that is heterozygous for two different traits
The allele that is expressed only if two identical copies are present
The likelihood of something occurring as a matter of chance
When one allele cannot completely mask the effects of another allele
Any organism with 2 identical alleles of a gene
When different genes contribute to a particular phenotype
True-breeding plants used in an initial cross
Premises
The first generation of offspring from the cross of two true-breeding parents
The physical traits of an organism
An F1 heterozygote (for a single trait)
When a single allele has multiple phenotypic effects
Where an allele is found on a chromosome
When alleles at one locus mask the expression of alleles at a different locus
Any organism with 2 different alleles of a gene
The result of a cross between two first-generation organisms
The genetic makeup of an organism
When displayed traits are unchanged over multiple generations
When one allele masks the effect of another
An organism that is heterozygous for two different traits
The allele that is expressed only if two identical copies are present
The likelihood of something occurring as a matter of chance
When one allele cannot completely mask the effects of another allele
Any organism with 2 identical alleles of a gene
When different genes contribute to a particular phenotype
True-breeding plants used in an initial cross
Responses
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