Q36 of 167 Page 192

(a) What are genes? Where are they located in our body?

(A) Genes are the units of heredity that transfer characteristics/traits from parent to offspring. They are found on chromosomes in our body and chromosomes are found in nucleus of the cell.


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Name two human traits which show variation.

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How does the creation of variation in a species ensure its survival?

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(b) What is meant by dominant genes and recessive genes? Give one example of each.

 36

(c) Explain how, characteristics (or traits) are inherited through genes.