Human Genetics: Inheritance of Single-Gene Differences

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

What is a major limitation of using humans as research subjects in genetics?

  • Their ability to interbreed randomly
  • Their short life cycle
  • Their ability to be subjected to rigorous experimental conditions
  • Their long life cycle (correct)

Which of the following is NOT a method used to study human genetics?

  • Randomized controlled trials (correct)
  • Karyotyping
  • DNA sequencing
  • Pedigree Analysis

What can be detected through karyotyping?

  • Mode of transmission of hereditary traits
  • Numerical and structural abnormalities (correct)
  • Risks of having affected offspring
  • Dominance or recessiveness of alleles

What type of inheritance pattern is characterized by the trait never skipping a generation?

<p>Autosomal Dominant (C)</p> Signup and view all the answers

What is the primary method used in human genetics?

<p>Pedigree Analysis (C)</p> Signup and view all the answers

What type of marriage would produce offspring that are also affected by the trait?

<p>Marriage between two affected individuals (A)</p> Signup and view all the answers

What is the characteristic of metacentric chromosomes in terms of centromere position?

<p>centromeres in the middle of the chromosome (B)</p> Signup and view all the answers

Which group of human chromosomes has a medium size and acrocentric centromere location?

<p>Group D (B)</p> Signup and view all the answers

What is the chromosomal composition of Turner's Syndrome?

<p>22II+ X0 (C)</p> Signup and view all the answers

Which type of chromosomal aberration is characterized by 22II+ I21+ XX or XY?

<p>Down's Syndrome (A)</p> Signup and view all the answers

What is the centromere location of chromosomes in Group G?

<p>acrocentric (D)</p> Signup and view all the answers

Which of the following chromosomal aberrations is characterized by 22II+XXX?

<p>Metafemale (B)</p> Signup and view all the answers

What is the key characteristic of Autosomal Dominant inheritance?

<p>No skipping of generations is observed (D)</p> Signup and view all the answers

What is the most likely explanation for the occurrence of cystic fibrosis in a population?

<p>Matings between heterozygotes (C)</p> Signup and view all the answers

What is the pattern of inheritance observed in Sex-linked Recessive traits?

<p>Affected families with unaffected husbands transmit the trait to sons only (C)</p> Signup and view all the answers

What is the key difference between Autosomal Dominant and Autosomal Recessive inheritance?

<p>The presence of skipping of generations (C)</p> Signup and view all the answers

What is the probability of having a child with an autosomal recessive disorder if both parents are carriers of the gene?

<p>1 in 4 (C)</p> Signup and view all the answers

What is the reason for increased consanguinity between parents in Autosomal Recessive Disorders?

<p>Because most matings are with relatives (C)</p> Signup and view all the answers

Flashcards are hidden until you start studying

More Like This

Use Quizgecko on...
Browser
Browser