CH 5: Concepts in inheritance
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Questions and Answers

What type of genetic cross involves two different characteristics?

  • Incomplete Dominance
  • Monohybrid Cross
  • Complete Dominance
  • Dihybrid Cross (correct)
  • In which genetic situation does the dominant allele completely mask the recessive allele in the heterozygous condition?

  • Co-dominance
  • Multiple Alleles
  • Complete Dominance (correct)
  • Incomplete Dominance
  • What is the term for a situation where offspring have an intermediate phenotype between the two parents?

  • Incomplete Dominance (correct)
  • Complete Dominance
  • Multiple Alleles
  • Monohybrid Cross
  • Which type of inheritance has both alleles equally expressed in the phenotype?

    <p>Co-dominance</p> Signup and view all the answers

    What does 'Multiple Alleles' refer to in genetics?

    <p>Having more than two alternative forms of a gene at the same locus</p> Signup and view all the answers

    What is chromatin?

    <p>A complex of DNA and proteins found in the nucleus of cells</p> Signup and view all the answers

    What are alleles?

    <p>Different forms of a gene that occur at the same locus on homologous chromosomes</p> Signup and view all the answers

    In genetics, what is the genotype of an organism?

    <p>The genetic makeup of an organism, determining its specific characteristics</p> Signup and view all the answers

    What happens when a recessive allele is in the heterozygous condition?

    <p>It is masked in the phenotype</p> Signup and view all the answers

    According to the Law of Dominance, what happens when two homozygous organisms with contrasting traits are crossed?

    <p>All individuals of the first generation (F1) will display the dominant trait</p> Signup and view all the answers

    What is the genetic makeup of an organism?

    <p>Genotype</p> Signup and view all the answers

    What are different forms of a gene that occur at the same locus on homologous chromosomes?

    <p>Alleles</p> Signup and view all the answers

    When does a recessive allele get expressed in an organism's phenotype?

    <p>In the homozygous condition only</p> Signup and view all the answers

    Which law states that individuals of the first generation will display the dominant trait when two homozygous contrasting organisms are crossed?

    <p>Law of Dominance</p> Signup and view all the answers

    What is a complex of DNA and proteins found in the nucleus of cells, which condenses to form chromosomes during cell division?

    <p>Genes</p> Signup and view all the answers

    In genetics, what term describes an organism with two identical alleles for a trait?

    <p>Homozygous</p> Signup and view all the answers

    What type of allele is expressed in the phenotype whether in homozygous or heterozygous condition?

    <p>Dominant allele</p> Signup and view all the answers

    In genetics, what is the term for a genetic cross involving only one characteristic or trait?

    <p>Monohybrid Cross</p> Signup and view all the answers

    When an individual is heterozygous for a particular characteristic, what is exhibited in the phenotype?

    <p>Dominant trait</p> Signup and view all the answers

    What type of inheritance results in offspring with an intermediate phenotype, different from both parents?

    <p>Co-dominance</p> Signup and view all the answers

    Which term describes a genetic situation where the dominant allele completely masks the expression of the recessive allele in the heterozygous condition?

    <p>Complete Dominance</p> Signup and view all the answers

    What does 'Multiple Alleles' refer to in genetics?

    <p>Having more than two alternative forms of a gene at a locus</p> Signup and view all the answers

    In which genetic cross are two different characteristics involved?

    <p>Dihybrid Cross</p> Signup and view all the answers

    If two alleles are equally expressed in the phenotype, what type of inheritance is observed?

    <p>Co-dominance</p> Signup and view all the answers

    What is the genetic makeup of an organism?

    <p>Genotype</p> Signup and view all the answers

    In genetics, what term describes an organism with two identical alleles for a trait?

    <p>Homozygous</p> Signup and view all the answers

    Which term describes the physical appearance of an organism based on its genotype?

    <p>Phenotype</p> Signup and view all the answers

    What type of alleles are masked in the phenotype when in the heterozygous condition?

    <p>Recessive alleles</p> Signup and view all the answers

    Which term refers to different forms of a gene that occur at the same locus on homologous chromosomes?

    <p>Alleles</p> Signup and view all the answers

    When an organism is homozygous for a trait, how many identical alleles does it have?

    <p>Two</p> Signup and view all the answers

    'Chromatin' is best described as a complex of DNA and proteins found in the nucleus of cells that __________.

    <p>Condenses to form chromosomes during cell division</p> Signup and view all the answers

    In a monohybrid cross involving a heterozygous individual, which trait will be exhibited in the phenotype?

    <p>Dominant trait</p> Signup and view all the answers

    What type of inheritance is observed when a genetic situation completely masks the expression of the recessive allele in the heterozygous condition?

    <p>Complete dominance</p> Signup and view all the answers

    When two phenotypically different parents produce offspring with an intermediate phenotype, what type of inheritance is involved?

    <p>Incomplete dominance</p> Signup and view all the answers

    What does 'co-dominance' refer to in genetics?

    <p>Two alleles equally expressed in the phenotype</p> Signup and view all the answers

    In genetics, what is the term for having more than two alternative forms of a gene at the same locus?

    <p>Multiple alleles</p> Signup and view all the answers

    When a dihybrid cross involves two different characteristics, what type of genetic cross is being performed?

    <p>Monohybrid cross</p> Signup and view all the answers

    What genetic situation involves offspring with an intermediate phenotype that is different from both parents?

    <p>Incomplete dominance</p> Signup and view all the answers

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