How are traits passed from parent to their offspring?

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DNA is the molecule that makes up our chromosomes, which in turn contain thousands of genes. Genes direct the production of proteins according to the genetic code and these proteins are needed for life processes to occur, building the body's structure, are components of cell membranes, muscles, hormones and enzymes. 

Organisms inherit traits via the process of fertilization. At that moment, a haploid sperm nucleus and an egg nucleus also haploid, fuse together creating a diploid fertilized egg or zygote. It is from this cell that the genetic blueprint for all the cells to follow within the organism has been determined. 

Our genes are found in pairs...

(The entire section contains 345 words.)

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