If Three Babies of Different Ages Were Shown the Same

question 154

Multiple Choice

If three babies of different ages were shown the same picture of a human face, you would expect that the 2-month-old baby would look longest at __________; the 5-month-old baby would look longest at the ___________; and the 8-month-old baby would look longest at ___________.

• A) the nose; the mouth; the eyes
• B) the entire face; the eyes; the eyebrows
• C) the mouth; the nose; the eyes
• D) the eyes; the mouth; the entire face

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Definitions:

Silencer

A regulatory DNA sequence that can bind repressor proteins to inhibit the expression of a gene.

Insulator

A material that resists the flow of electric charge, used in various applications to protect against electric shock or retain heat.

Transcription Factor

Regulatory protein that influences transcription by binding directly to DNA; e.g., an activator or repressor.

Enhancer

DNA sequences that increase the transcription level of a gene they are associated with, enhancing gene expression.