Have you ever think why do we often look like our parents because the characteristics of individual human beings are passed from one generation to the next in their chromosomes. each of our parents gives us 23 chromosomes, making 46 in all. that means that we have two versions of each of our genes, but one is often dominant. we see the effect of the dominant gene, but the other gene is still there and can we passed on to our children.
chromosomes are tiny threads that are parents in all cells apart from the red blood cells. the contains all the information’s for an entire person to develop. there is a special pair that actually determine’s a person’s sex.
Short sections of a chromosome are called genes. Each gene carries the instructions for a specific characteristic, such as an eye color. Many of these genes work with other genes, so it is not easy to say what effects they will have. Scientists are currently studying all the genes in a human cell, which will give them the complete blueprint for a human being.