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Unit 5 Genetics

Quiz by Zhao

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41 questions
Show answers
  • Q1
    According to Gregor Mendel's principle of dominance, what is the phenotype of an organism that carries two recessive alleles?
    The phenotype will display the recessive trait
    The phenotype will display a blend of dominant and recessive traits
    The phenotype will display the dominant trait
    The phenotype will be unable to express any traits
    30s
  • Q2
    According to Gregor Mendel's principle of dominance, what is the genotype of an organism that displays a dominant trait?
    The organism can have either a homozygous recessive genotype (aa) or a heterozygous genotype (Aa)
    The organism can have either a homozygous dominant genotype (AA) or a heterozygous genotype (Aa)
    The organism must have a homozygous dominant genotype (AA)
    The organism must have a homozygous recessive genotype (aa)
    30s
  • Q3
    According to Gregor Mendel's principle of dominance, what will be the phenotype of an organism with a heterozygous genotype?
    The phenotype will display the recessive trait
    The phenotype will display a blend of dominant and recessive traits
    The phenotype will not exhibit any traits
    The phenotype will display the dominant trait
    30s
  • Q4
    According to Gregor Mendel's principle of dominance, what will be the genotype of an organism that displays a recessive trait?
    The organism can have either a homozygous dominant genotype (AA) or a heterozygous genotype (Aa)
    The organism must have a homozygous recessive genotype (aa)
    The organism can have either a homozygous recessive genotype (aa) or a heterozygous genotype (Aa)
    The organism must have a homozygous dominant genotype (AA)
    30s
  • Q5
    According to Gregor Mendel's principle of dominance, what happens when a dominant allele and a recessive allele are present in an organism?
    The dominant allele is always masked by the recessive allele
    The recessive allele is expressed while the dominant allele is masked
    Both the dominant and recessive alleles are expressed equally
    The dominant allele is expressed while the recessive allele is masked
    30s
  • Q6
    Which of the following describes a hybrid according to Gregor Mendel's experiments with pea plants?
    An organism resulting from a mutation in a purebred variety
    An organism resulting from the cross-breeding of two genetically identical purebred varieties
    An organism resulting from self-fertilization of a purebred variety
    An organism resulting from the cross-breeding of two genetically different purebred varieties
    30s
  • Q7
    Which of the following statements is true about Mendel's law of segregation?
    Alleles for each gene remain together during gamete formation
    The alleles for each gene segregate randomly during gamete formation
    Each gamete carries both alleles for each gene
    During gamete formation, the alleles for each gene segregate from each other so that each gamete carries only one allele for each gene
    30s
  • Q8
    In Gregor Mendel's experiments with pea plants, what is the first generation of offspring called?
    F1 generation
    F2 generation
    G1 generation
    P generation
    30s
  • Q9
    What is the term used to describe a genetic trait that is masked or not expressed in the presence of a dominant trait?
    Hybrid
    Recessive
    Mutation
    Dominant
    30s
  • Q10
    What is the term used to describe an organism that has two identical alleles for a particular trait?
    Mutation
    Heterozygous
    Hybrid
    Homozygous
    30s
  • Q11
    In Mendel's experiments, what is the second generation of offspring called?
    G1 generation
    F1 generation
    P generation
    F2 generation
    30s
  • Q12
    What is an allele?
    A type of organelle
    A type of protein
    A type of chromosome
    A variant form of a gene
    30s
  • Q13
    What is the term used to describe different forms of a gene?
    Genotypes
    Phenotypes
    Alleles
    Chromosomes
    30s
  • Q14
    What term did Gregor Mendel use to describe the physical characteristics of an organism?
    Alleles
    Genes
    Traits
    Phenotypes
    30s
  • Q15
    What did Gregor Mendel experiment on to study inheritance?
    Bacteria
    Pea plants
    Fruit flies
    Mice
    30s

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