Ch 5: Sex determination
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Questions and Answers

What is the genetic makeup of a male individual?

  • YX
  • XY (correct)
  • YY
  • XX

    • If a female individual provides an X chromosome during fertilization, what does the male individual provide?

  • Y chromosome (correct)
  • X chromosome
  • A chromosome
  • Z chromosome

    • What is the expected phenotypic ratio of males to females when a male (XY) and a female (XX) have offspring?

  • 2:1
  • 3:1
  • 1:2
  • 1:1 (correct)

    • In the context of sex determination in humans, what is the probability of having a baby girl when the couple already has three sons?

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

    During fertilization in humans, what is the chance of forming an XY combination?

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

    What is the probability of a couple with three sons having a baby girl in their next child?

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

    During fertilization in humans, if a male provides an X chromosome, what would be the result?

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

    In humans, what would be the genetic makeup of a male individual resulting from a cross between two males?

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

    If a male individual provides a Y chromosome during fertilization, what chromosome would the female provide?

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

    What is the phenotypic ratio of males to females when a male with genotype XY mates with another male with genotype XY?

    <p>0:1 (C)</p> Signup and view all the answers

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