Multifactorial Transmission in Traits Quiz
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Questions and Answers

What does multifactorial transmission refer to?

  • Determination of traits by genetic factors only
  • Determination of traits by environmental factors only
  • Determination of traits by a combination of genetic and environmental factors (correct)
  • Determination of traits by social factors

    • In multifactorial transmission, what does a genotype provide?

  • Specific phenotype expression
  • Environmental variety
  • Uniform phenotypic outcomes
  • A particular range within which a phenotype may achieve expression (correct)

    • What may happen to individuals with a genotype that allows easy weight gain?

  • They are always slim
  • They will always be obese
  • They can never lose weight
  • They may be relatively slim but may struggle to be very thin (correct)

    • Which factor determines how a particular genotype will be expressed as a phenotype in many cases?

    <p>Environmental factors only</p> Signup and view all the answers

    For genotypes relatively unaffected by environmental factors, what is characteristic of their development?

    <p>Follows a predetermined pattern regardless of the environment</p> Signup and view all the answers

    What is the impact of the environment on individuals with genotypes affected by it?

    <p>Determines how the genotype will be expressed as a phenotype</p> Signup and view all the answers

    What is the consequence if one parent contributes a recessive p gene symbolized as Pp?

    <p>The child will not inherit PKU, but will carry the recessive gene.</p> Signup and view all the answers

    What is the likelihood that a child inherits two dominant genes and does not have PKU?

    <p>One in four</p> Signup and view all the answers

    Which amino acid is a child with PKU unable to make use of due to the disorder?

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

    How is PKU inherited?

    <p>Through a double recessive gene</p> Signup and view all the answers

    What happens when both parents have the dominant form of the gene (PP)?

    <p>The child will not inherit PKU and will not carry the recessive gene.</p> Signup and view all the answers

    What is the result when one parent has a pair of genes as Pp?

    <p>The child will not inherit PKU, but may be a carrier.</p> Signup and view all the answers

    What is a common practice among some pregnant women in certain societies, as mentioned in the text?

    <p>Immediately returning to work after giving birth</p> Signup and view all the answers

    How is childbirth described among the !Kung people in Africa?

    <p>Calm, without much ado or assistance</p> Signup and view all the answers

    How do some societies view childbirth?

    <p>As dangerous</p> Signup and view all the answers

    What is a key topic discussed in Chapter 4 related to physical development in infancy?

    <p>The biological basis of reflexes</p> Signup and view all the answers

    Which sensory aspect is NOT mentioned as part of infant development in the text?

    <p>Tactile perception of temperature</p> Signup and view all the answers

    What is emphasized as essential for fueling motor development in infants?

    <p>Proper nutrition through breast or bottle feeding</p> Signup and view all the answers

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