Identical twins were separated at birth and raised by two different families. Years later, one twin was a physically fit member of the cross-country team, and the other twin was overweight with slightly higher-than-normal blood pressure. The differences in these twins could be explained by the fact that 1. the genes in the two individuals are completely different 2. in twins, each individual inherits genes from only one parent 3. the DNA bases in twins combine differently 4. the environment can influence the expression of genes.

If the two identical twins are different from each othe in later life indicates that the the environment can influence the expression of genes.

Gene Expression:

The genes present in the DNA convert to the mRNA and later conver to the protein.

The gene expression depends upon the signals that come to the nucleus and fascilitate the gene expression.

The signal is affected by the environmental stress such as food, mental stress, and temperature.

Therefore, If the two identical twins are different from each othe in later life indicates that the the environment can influence the expression of genes.

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