Take This Quiz Up To Chromosomal Inheritance

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  • 1/10 Questions

    Down's syndrome is a trisomy of chromosome number

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    • 10
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    • 21
    • 23
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About This Quiz

In the study of biology, the chromosome theory of inheritance (often referred to as the Sutton-Boveri theory) explains how chromosomes are the carriers of genetic material that we receive from our respective parent cells. What do you know of how chromosomal inheritance works? Let’s find out.

Take This Quiz Up To Chromosomal Inheritance - Quiz

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  • 2. 

    The chromosomal theory of inheritance states

    • Genes are located on chromosomes

    • Chromosomes segregate during meoisis

    • Chromosomes undergo independent assortment during gamete formation

    • Mendel's Laws of Inheritance relate to the behavior of chromosomes in meiosis

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    The chromosomal theory of inheritance states that genes are located on chromosomes, chromosomes segregate during meiosis, and chromosomes undergo independent assortment during gamete formation. Mendel's Laws of Inheritance relate to the behavior of chromosomes in meiosis. Therefore, the correct answer is "all of the above" because all of these statements are true according to the chromosomal theory of inheritance.

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  • 3. 

    In genetics a "wild" type is

    • The phenotype most commonly found in nature

    • The dominant allele

    • Small letter for recessive, captial letter for dominant

    • The trait found on the x chromosome

    • A party animal

    Correct Answer
    A. The phenotype most commonly found in nature
    Explanation
    The term "wild" type in genetics refers to the phenotype that is most commonly observed in nature. This means that it is the most prevalent or common form of a trait or characteristic within a particular population or species. It is important to note that the wild type does not necessarily indicate dominance or recessiveness, as it is simply a term used to describe the most commonly occurring phenotype.

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  • 4. 

    A child with a chromosomal deletion on chromosome 15 will exhibit Angelman's syndrome if it came from his

    • Mother

    • Father

    Correct Answer
    A. Mother
    Explanation
    A child with a chromosomal deletion on chromosome 15 will exhibit Angelman's syndrome if it came from his mother. This is because Angelman's syndrome is caused by the absence or mutation of genes on the maternal copy of chromosome 15. The paternal copy of chromosome 15 does not contribute to the development of Angelman's syndrome. Therefore, if the child inherits the chromosomal deletion from his mother, he will exhibit the syndrome.

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  • 5. 

    A child with a chromosomal deletion on chromosome 15 will exhibit Prader Willi syndrome if the it came from his

    • Mother

    • Father

    Correct Answer
    A. Father
    Explanation
    Prader-Willi syndrome is caused by the absence of genetic material on the paternal chromosome 15. This means that if a child has a chromosomal deletion on chromosome 15, specifically from the father's side, they are more likely to exhibit Prader-Willi syndrome. The genetic material from the mother's side is not typically affected in this syndrome.

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  • 6. 

    Cri du chat syndrome is caused by a(n)___________on chromosome 5.

    • Deletion

    • Extra copy

    • Trisomy

    • Nondisjunction

    • Monoploidy

    Correct Answer
    A. Deletion
    Explanation
    Cri du chat syndrome is caused by a deletion on chromosome 5. This means that a portion of chromosome 5 is missing or deleted, leading to the characteristic features and symptoms of the syndrome. The deletion can occur during the formation of reproductive cells or early in embryonic development. This genetic abnormality disrupts the normal development and function of various body systems, resulting in the specific physical and intellectual disabilities associated with Cri du chat syndrome.

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  • 7. 

    Males with an extra Y chromosome

    • Are genetically female

    • Do not exhibit any well defined syndrome

    • Have mental retardation

    • Are dwarf

    • Have heart defects

    Correct Answer
    A. Do not exhibit any well defined syndrome
    Explanation
    Males with an extra Y chromosome do not exhibit any well-defined syndrome. This means that they do not show any specific set of symptoms or characteristics that are associated with having an extra Y chromosome. While individuals with certain genetic conditions may exhibit distinct syndromes, such as Down syndrome or Turner syndrome, males with an extra Y chromosome do not have a recognized syndrome associated with their genetic makeup.

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  • 8. 

    The genetic event that results in Turner's syndrome (XO) is probably

    • Nondisjunction

    • Deletion

    • Parental imprinting

    • Monoploidy

    • Independent assortment

    Correct Answer
    A. Nondisjunction
    Explanation
    Turner's syndrome (XO) is a genetic disorder that occurs in females when one of the two X chromosomes is missing or incomplete. This genetic event is most likely caused by nondisjunction, which is the failure of chromosomes to separate correctly during cell division. Nondisjunction can result in the formation of gametes with an abnormal number of chromosomes, leading to genetic disorders such as Turner's syndrome. Deletion, parental imprinting, monoploidy, and independent assortment do not directly result in Turner's syndrome.

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  • 9. 

    A color blind son inherited this trait from his

    • Mother

    • Father

    • Mother only if she is colorblind

    • Father only if he is colorblind

    Correct Answer
    A. Mother
    Explanation
    A color-blind son typically inherits this trait from his mother. The genes responsible for color vision are located on the X chromosome, and males inherit one X chromosome from their mother. If the mother carries the gene for color blindness (even if she is not color-blind herself) and passes it to her son, he may be color-blind.

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  • 10. 

    A 1:1:1:1 ratio of offspring from a dihybrid test cross indicates that

    • Genes are linked

    • The domiant organism was homozygous

    • Crossing over has occurred

    • The genes are 25 map units apart

    • The genes are not linked

    Correct Answer
    A. The genes are not linked
    Explanation
    A 1:1:1:1 ratio of offspring from a dihybrid test cross indicates that the genes are not linked. This is because in a test cross, one parent is homozygous recessive for both traits, and the other parent is heterozygous for both traits. If the genes were linked, there would be a deviation from the expected 1:1:1:1 ratio due to the crossing over of linked genes during meiosis. However, since the ratio is 1:1:1:1, it suggests that the genes are independently assorting and are not linked.

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  • Nov 06, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Nov 22, 2011
    Quiz Created by
    Laward
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