Human Genetics: Normal Karyotype and Genetic Defects
15 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

In autosomal recessive inheritance, what are the characteristics of the parents?

  • One parent is affected, and the other is a carrier.
  • Both parents are normal but high incidence of consanguinity. (correct)
  • Both parents are affected.
  • Both parents are carriers of the disease.
  • Which pattern of Mendelian inheritance exhibits a 50% chance of the child being affected if one parent is diseased?

  • X-linked recessive
  • Autosomal dominant (correct)
  • X-linked dominant
  • Autosomal recessive
  • What is the mode of inheritance when only one mutant gene is sufficient to express the disease?

  • Autosomal
  • Recessive
  • X-linked
  • Dominant (correct)
  • What are the sex chromosomes in a normal human karyotype?

    <p>XX or XY</p> Signup and view all the answers

    Which type of genetic defect results in a high incidence of consanguinity in the parents?

    <p>Autosomal recessive inheritance</p> Signup and view all the answers

    In autosomal dominant inheritance, what percentage of chance does the child have of being affected if one parent is diseased?

    <p>50%</p> Signup and view all the answers

    Which pattern of inheritance is characterized by mental retardation, mongoloid facies, and hypotonia due to the presence of three copies of chromosome 21?

    <p>Chromosomal abnormalities</p> Signup and view all the answers

    What is the most common example of abnormalities of chromosomal number?

    <p>Down syndrome</p> Signup and view all the answers

    What educational process seeks to assist affected and/or at-risk individuals to understand the nature of a genetic disorder, its transmission, and the options available to them in management and family planning?

    <p>Genetic counseling</p> Signup and view all the answers

    Which parent is a carrier and normal in shape in the case of sex-linked recessive inheritance?

    <p>The mother</p> Signup and view all the answers

    In sex-linked recessive inheritance, what percentage of carrier mother's sons will be affected by the disease?

    <p>50%</p> Signup and view all the answers

    Which of the following is an example of a genetic disorder that follows sex-linked recessive inheritance?

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

    What is the rarity pattern of inheritance associated with examples like asthma and rheumatic fever?

    <p>Multifactorial inheritance</p> Signup and view all the answers

    In chromosomal abnormalities, how many pairs of chromosomes are present in a human cell?

    <p>23 pairs</p> Signup and view all the answers

    What is the incidence of Down syndrome?

    <p>1 in 600 births</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Browser