EMBRYOLOGY
CHROMOSOMES AND CELL DIVISIONS
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Question
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A small piece of DNA that codes for a trait.
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chromatin
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gene
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chromosome
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chromatid
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centromere
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Explanation:
Detailed explanation-1: -Gene. A segment of a DNA molecule (a sequence of bases) that codes for a particular protein and determines the traits (phenotype) of the individual.
Detailed explanation-2: -Genetic Code Each gene’s code uses the four nucleotide bases of DNA: adenine (A), cytosine (C), guanine (G) and thymine (T)-in various ways to spell out three-letter “codons” that specify which amino acid is needed at each position within a protein.
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