18 Questions
What does multifactorial transmission refer to?
Determination of traits by a combination of genetic and environmental factors
In multifactorial transmission, what does a genotype provide?
A particular range within which a phenotype may achieve expression
What may happen to individuals with a genotype that allows easy weight gain?
They may be relatively slim but may struggle to be very thin
Which factor determines how a particular genotype will be expressed as a phenotype in many cases?
Environmental factors only
For genotypes relatively unaffected by environmental factors, what is characteristic of their development?
Follows a predetermined pattern regardless of the environment
What is the impact of the environment on individuals with genotypes affected by it?
Determines how the genotype will be expressed as a phenotype
What is the consequence if one parent contributes a recessive p gene symbolized as Pp?
The child will not inherit PKU, but will carry the recessive gene.
What is the likelihood that a child inherits two dominant genes and does not have PKU?
One in four
Which amino acid is a child with PKU unable to make use of due to the disorder?
Phenylalanine
How is PKU inherited?
Through a double recessive gene
What happens when both parents have the dominant form of the gene (PP)?
The child will not inherit PKU and will not carry the recessive gene.
What is the result when one parent has a pair of genes as Pp?
The child will not inherit PKU, but may be a carrier.
What is a common practice among some pregnant women in certain societies, as mentioned in the text?
Immediately returning to work after giving birth
How is childbirth described among the !Kung people in Africa?
Calm, without much ado or assistance
How do some societies view childbirth?
As dangerous
What is a key topic discussed in Chapter 4 related to physical development in infancy?
The biological basis of reflexes
Which sensory aspect is NOT mentioned as part of infant development in the text?
Tactile perception of temperature
What is emphasized as essential for fueling motor development in infants?
Proper nutrition through breast or bottle feeding
Test your knowledge on how traits reflect multifactorial transmission, influenced by both genetic and environmental factors. Explore how a genotype sets the range for phenotype expression and understand temperament patterns in individuals.
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