Question

In your own words, describe chromosomes, genes, and DNA.

Recall that traits are observable characteristics of an individual. Some examples given in this lesson were tongue rolling, earlobe shape, and the presence or absence of a widow’s peak. 
Explain why individuals in a population have different observable traits. Use your observation skills to find two examples of traits that you have inherited. These traits must be different from the ones that are discussed in the lesson.
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Answer 1

A gene is the basic unit of heredity, DNA a self replicating material and chromosome a structure of nucleic acids and protein.