An introduction to DNA and genetic information

Why are some people tall and some people short? Why are our noses and faces all different shapes? Why do we all look different? This is because we all have different genetic information.

WHAT IS GENETIC INFORMATION?

Genetic information contains the instructions that make you. It is made from a chemical called DNA. DNA contains genes. Genes determine what you look like.

People who have similar features have similar genes. Two brothers with the same shaped nose will have the same nose genes.

There are lots of genes that control height. Each person has a different mixture of these genes. This means that each person has a different set of instructions controlling their height. We are all different heights because of this.

WHERE DO WE GET OUR GENETIC INFORMATION FROM?

When your parents have sex, the DNA from your mother and from your father mixes. The mixed DNA forms your genetic information. You are made from this information. It controls what you look like.

Half your genetic information comes from your mother and half from your father. If you have children, half of their genetic information will be from you, and half will be from their other parent.

VICTORIA COX

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5 Comments

  1. Mohammed 6 years ago February 10, 2018

    Very relevant knowledge. Your website is a great place to be. I often share the information here with my nephew and cousins at home. Thanks for the good work.

    REPLY
  2. Ali kabono 6 years ago February 10, 2018

    what make us genetic differences and what will us eat to be have good genetic differences
    1)I want to know the meaning of genetic make up

    REPLY
  3. Marvin 6 years ago February 11, 2018

    Nice work

    REPLY
  4. Marvin 6 years ago February 11, 2018

    Good job

    REPLY
  5. Harry 3 years ago June 22, 2021

    What makes people from the same family to have different appearance provided they were born to the same parents?

    REPLY

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