At Which Age Do Most Infants Begin to Fear Strangers

question 1

Multiple Choice

At which age do most infants begin to fear strangers?

• A) 2 months
• B) 4 months
• C) 6 months
• D) 12 months

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Definitions:

Gel Electrophoresis

A laboratory method used to separate mixtures of DNA, RNA, or proteins according to molecular size.

Restriction Enzymes

Proteins used by bacteria to cut DNA at specific sites, widely used in molecular biology for gene cloning.

Bacteria

Single-celled microorganisms that can exist either as independent organisms or as parasites, with some capable of causing diseases.