What causes the differences in physical characteristics like hair color among people?
A. different versions of genes
B. variations in DNA length
C. different numbers of chromosomes
D. variations in cell nucleus size
Answers
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Answer:
A. different versions of genes which they inherit from their parents
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Explanation:
In genetics, the physical characteristics are referred as phenotype. Each character such as hair color in offspring is determined by a pair of genes. One gene is inherited from father and other gene is inherited from mother. The phenotype is determined by the dominant gene
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