When Sitting Without Support, the 10- to 12-Month-Old Infant

question 19

Multiple Choice

When sitting without support, the 10- to 12-month-old infant:

• A) Generally needs outside assistance
• B) Has definite lumbar support
• C) Does not display lumbar support
• D) Is unable to maintain that posture for more than a few minutes
• E) Can not turn without falling

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Definitions:

Environmental Stimuli

External factors or changes in the environment that can elicit responses from organisms.

Monozygotic Twins

Twins that originate from a single fertilized egg, making them genetically identical.

Genetics

The study of genes, genetic variation, and heredity in living organisms.

Epigenetic Study

An area of biology focusing on the mechanisms that cause changes in the expression of genes without altering the DNA sequence itself.