Lydia Fairchild and the Case of Human Chimeras
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Questions and Answers

What term is used to describe a human being composed of cells that are genetically distinct?

  • Vanishing twin
  • Transplant
  • Absorption
  • Chimera (correct)

How did Lydia Fairchild become the biological aunt of her own children?

  • Through an artificial transfusion
  • By having a vanishing twin
  • After a transplant operation
  • By absorbing her twin zygote before birth (correct)

What percentage of twin pregnancies are estimated to involve a vanishing twin?

  • 25%
  • 50%
  • 10%
  • 36% (correct)

How do most twins likely disappear in cases of natural chimerism?

<p>They vanish without a trace (D)</p> Signup and view all the answers

What is the primary reason why individuals may not be aware of their genetic twin presence?

<p>The lost sibling's genetic presence is usually not revealed unless by chance (A)</p> Signup and view all the answers

What is the main focus of the text regarding human chimeras?

<p>The philosophical implications of human chimeras (B)</p> Signup and view all the answers

Which statement best describes the distinction between human chimeras and conjoined twins?

<p>Conjoined twins have the same genetic cell line. (C)</p> Signup and view all the answers

Why do the journalistic headlines about Fairchild's case challenge a standard presumption of modern Western culture?

<p>Because they question the one-person-per-body assumption. (D)</p> Signup and view all the answers

What aspect distinguishes personhood from merely having a particular type of genetic material according to the text?

<p>Structural organization of genetic material (B)</p> Signup and view all the answers

How does the example of conjoined twins challenge the assumption about bodies correlating one-to-one with people?

<p>By illustrating that conjoined twins develop different personalities despite sharing a body. (C)</p> Signup and view all the answers

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