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Sex-linked traits, incomplete dominance, codominance

Quiz by John Stegmaier

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14 questions
Show answers
  • Q1
    Which of the following statements accurately describes a sex-linked trait?
    A trait that is inherited only by males.
    A trait that is carried on the sex chromosomes.
    A trait that is influenced by multiple genes.
    A trait that is inherited only by females.
    30s
  • Q2
    What is the genetic phenomenon known as incomplete dominance?
    When neither allele is completely dominant over the other, resulting in a blended phenotype.
    When a trait is determined by multiple gene interactions.
    When alleles are located on the same chromosome and tend to be inherited together.
    When one allele completely masks the expression of the other allele.
    30s
  • Q3
    What is codominance?
    When a trait is determined by multiple gene interactions.
    When one allele is completely dominant over the other.
    When alleles are located on the same chromosome and tend to be inherited together.
    When both alleles are fully expressed in the phenotype.
    30s
  • Q4
    Which of the following statements accurately describes a sex-linked trait?
    A trait that is inherited only by males.
    A trait that is influenced by multiple genes.
    A trait that is carried on the sex chromosomes.
    A trait that is inherited only by females.
    30s
  • Q5
    What is a carrier in the context of sex-linked traits?
    An individual who carries the gene for a trait and exhibits the trait themselves.
    An individual who carries the gene for a trait but does not exhibit the trait themselves.
    An individual who carries multiple sex-linked genes.
    An individual who exhibits the trait for a particular sex-linked gene.
    30s
  • Q6
    What is the inheritance pattern of a sex-linked trait?
    The trait is inherited in the same way in both males and females.
    The trait is inherited only by males.
    The trait is inherited only by females.
    The trait is inherited differently between males and females due to its location on the sex chromosomes.
    30s
  • Q7
    What is an example of a sex-linked trait in humans?
    Eye color.
    Height.
    Hair type.
    Color blindness.
    30s
  • Q8
    What is the difference between homozygous and heterozygous individuals?
    Homozygous individuals have two alleles, while heterozygous individuals have three alleles.
    Homozygous individuals have two different alleles, while heterozygous individuals have two identical alleles.
    Homozygous individuals have two identical alleles for a particular gene, while heterozygous individuals have two different alleles.
    Homozygous individuals have one allele, while heterozygous individuals have two alleles.
    30s
  • Q9
    What is an example of codominance in genetics?
    AB blood type.
    Straight hair texture.
    Brown eye color.
    Tall height.
    30s
  • Q10
    Which of the following is an example of incomplete dominance?
    Pink flowers from crossing red and white flowers
    Blue eyes from crossing two parents with brown eyes
    Straight hair from crossing curly and straight-haired parents
    Tall height from crossing two parents with average height
    30s
  • Q11
    Which of the following is an example of codominance?
    Brown eyes from crossing two parents with blue eyes
    AB blood type from crossing A and B blood types
    Positive Rh factor from crossing two parents with negative Rh factor
    O blood type from crossing two parents with A blood type
    30s
  • Q12
    Which of the following is an example of a sex-linked trait?
    Cleft chin
    Attached earlobes
    Hitchhiker's thumb
    Hemophilia
    30s
  • Q13
    Which of the following best describes incomplete dominance?
    When the heterozygous phenotype exhibits the dominant trait only
    When the heterozygous phenotype is a blend of the two homozygous phenotypes
    When the heterozygous phenotype exhibits the recessive trait only
    When both alleles in the heterozygous phenotype are expressed equally
    30s
  • Q14
    What is codominance?
    When one allele in the heterozygous genotype is completely dominant over the other
    When one allele in the heterozygous genotype is completely recessive to the other
    When both alleles in the heterozygous genotype are fully expressed
    When both alleles in the heterozygous genotype are partially expressed
    30s

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