If a Teratogen Interferes with Prenatal Development Only During a Particular

question 91

Multiple Choice

If a teratogen interferes with prenatal development only during a particular period of time, the period of development in which the teratogen can exert its effect is called:

• A) a teratogenic period
• B) a teratogenic stage
• C) a critical period
• D) a high-risk - low-reward stage

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Definitions:

AUG

The RNA codon that signals the start of a protein-coding sequence and encodes for the amino acid methionine.

UAA

A stop codon in genetic code signaling the end of a protein synthesis.

UUU

In genetic code, a triplet nucleotide sequence (uracil-uracil-uracil) in RNA that codes for the amino acid phenylalanine, playing a role in protein synthesis.

DNA Sequences

The order of nucleotides in a DNA molecule, which determines genetic information and characteristics of living organisms.