Multifactorial Transmission in Traits Quiz

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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?

Environmental factors only (B) Signup and view all the answers

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

Follows a predetermined pattern regardless of the environment (A) Signup and view all the answers

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

Determines how the genotype will be expressed as a phenotype (C) Signup and view all the answers

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. (C) Signup and view all the answers

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

One in four (C) Signup and view all the answers

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

Phenylalanine (A) Signup and view all the answers

How is PKU inherited?

Through a double recessive gene (A) Signup and view all the answers

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. (A) Signup and view all the answers

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. (D) Signup and view all the answers

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

Immediately returning to work after giving birth (B) Signup and view all the answers

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

Calm, without much ado or assistance (B) Signup and view all the answers

How do some societies view childbirth?

As dangerous (B) Signup and view all the answers

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

The biological basis of reflexes (B) Signup and view all the answers

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

Tactile perception of temperature (A) Signup and view all the answers

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

Proper nutrition through breast or bottle feeding (D) Signup and view all the answers