Genetics Chapter 4 Quiz
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Questions and Answers

A type of substitution in which no amino acids change is called

  • Silent (correct)
  • Nonsense
  • Missense
  • Deletion

    • ATT TGA GCC - Original ATT GAG CC - Mutated The example above is an example of a

  • All of the above
  • Deletion - Substitution (correct)
  • Insertion - Frameshift
  • Deletion - Frameshift

    • A baby boy was bring to a pediatrician because of a delay in development of motor skills. Karyotype analysis result verified that the boy contains karyotype XXY. What is the provisional diagnostic disease of this boy?

  • Klinefelter syndrome (correct)
  • Edwards' syndrome
  • Patau syndrome
  • Turner syndrome

    • Flashcards

    Silent Mutation

    A type of substitution where no amino acids change.

    Insertion-Frameshift Mutation

    A mutation involving adding bases that alters the reading frame.

    Klinefelter Syndrome

    A genetic condition in boys characterized by XXY karyotype.

    Aneuploidy

    An abnormal number of chromosomes in a cell.

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    Trisomy 13

    Also known as Patau syndrome, a type of aneuploidy involving three copies of chromosome 13.

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    Point Mutation

    A gene mutation caused by the substitution of one nucleotide for another.

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    Mutations and Genetic Variability

    Mutations are a significant source of genetic diversity in organisms.

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    Somatic Mutations

    Mutations that occur in non-gamete cells.

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    Deletion Mutation

    A mutation where one or more nucleotides are removed from the DNA sequence.

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    Missense Mutation

    A mutation that results in the substitution of one amino acid for another in the protein.

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    Nonsense Mutation

    A mutation that causes the protein to be truncated, leading to a shorter, nonfunctional protein.

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    Trisomy 21

    Also known as Down syndrome, a condition with three copies of chromosome 21.

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    Frameshift Mutation

    A mutation resulting from insertion or deletion that alters the reading frame of the genetic message.

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    Edwards' Syndrome

    Also known as Trisomy 18, a condition linked with three copies of chromosome 18.

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    Turner Syndrome

    A chromosomal disorder where females have one X chromosome (45,X).

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    Patau Syndrome

    Also known as Trisomy 13, it affects multiple systems in the body.

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    Genetic Variability

    The tendency of genetic characteristics to vary within a species.

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    Gametes

    Reproductive cells (sperm and eggs) that carry half the genetic information.

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    Chromosomal Abnormalities

    Any change in the normal structure or number of chromosomes.

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    Study Notes

    Question 10

    • A type of substitution in which no amino acids change is called a silent mutation.

    Question 11

    • The example provided (ATT TGA GCC – Original, ATT GAG CC – Mutated) is an example of a deletion-substitution mutation. This is a point mutation that resulted in substitution.

    Question 12

    • A baby boy with karyotype XXY has Klinefelter syndrome.

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    Description

    Test your knowledge on mutations and genetic disorders with this quiz on Chapter 4 of Genetics. Explore concepts like silent mutations, deletion-substitution mutations, and Klinefelter syndrome. Enhance your understanding of genetic variation and its implications.

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