Chromosomal Inheritance: Gene Mapping and Linkage

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Questions and Answers

What is the key concept in the chromosomal theory of inheritance?

  • Mendelian genes have specific loci on chromosomes (correct)
  • Genes are only expressed in a additive manner
  • Genes are only inherited in a dominant or recessive manner
  • Genes are inherited independently of each other

What is the term for the phenomenon where linked genes tend to be inherited together?

  • Gene linkage (correct)
  • Independent assortment
  • Crossing over
  • Recombination

What is the result of crossing over?

  • Segregation
  • Independent assortment
  • Recombination (correct)
  • Gene linkage

What is the recombination factor a measure of?

<p>The physical distance between genes on a chromosome (D)</p> Signup and view all the answers

What is an example of recombinant offspring?

<p>Cats with curly wings and eyes (B)</p> Signup and view all the answers

How is the recombination factor calculated?

<p>By dividing the number of recombinant offspring by the total number of offspring (B)</p> Signup and view all the answers

What is the percentage of recombination between two genes if the RF is 217/1,500?

<p>14.5% (C)</p> Signup and view all the answers

What is the result of nondisjunction during meiosis 1?

<p>4 abnormal haploid cells (B)</p> Signup and view all the answers

What is the term for the condition where an individual has an extra copy of a particular chromosome?

<p>Aneuploidy (A)</p> Signup and view all the answers

What is the result of X inactivation in females?

<p>One X chromosome is randomly inactivated (C)</p> Signup and view all the answers

What is the term for the genetic map that shows the actual order of genes on a chromosome?

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

What is the syndrome caused by an extra copy of the X chromosome in a male?

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

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