BBC - GCSE Bitesize: DNA, genes and chromosomes
Find information, videos, and activities about DNA, genes, chromosomes, the Experiment with the forces involved and measure the relationship between the. Your genes are part of what makes you the person you are. You are different from everyone alive now and everyone who has ever lived. DNA. But your genes. DNA GLE: Explain the relationship among genes, chromosomes, and inherited traits. Investigate the relationship among DNA, genes, and.
Info DNA, genes and chromosomes Your genes are part of what makes you the person you are. You are different from everyone alive now and everyone who has ever lived.
DNA But your genes also mean that you probably look a bit like other members of your family. For example, have you been told that you have 'your mother's eyes' or 'your grandmother's nose'?
Cell division - AQA
Genes influence what we look like on the outside and how we work on the inside. They contain the information our bodies need to make chemicals called proteins.
Proteins form the structure of our bodies, as well playing an important role in the processes that keep us alive. Genes are made of a chemical called DNA, which is short for 'deoxyribonucleic acid'. The DNA molecule is a double helix: The DNA double helix showing base pairs The sides are sugar and phosphate molecules. The rungs are pairs of chemicals called 'nitrogenous bases', or 'bases' for short. There are four types of base: These bases link in a very specific way: A always pairs with T, and C always pairs with G.
The DNA molecule has two important properties. It can make copies of itself. If you pull the two strands apart, each can be used to make the other one and a new DNA molecule. It can carry information. DNA code that is stored in a cells hereditary material. Since mids-scientists knew about nuclei of cells contain large molecules called nucleic acids.
Bychemists learned what the nucleic acid DNA was made of.
DNA, genes and chromosomes — University of Leicester
Similar to a twisted ladder 6 C. What does it look like? Each rung — Nitrogen base c. DNA has four kinds of nitrogen bases: What are the nitrogen base pairs in a DNA model? View Brainpop - DNA http: Different kinds of proteins — determine color of hair, height, and how things taste. Protein-builds cells and tissues or work as enzymes.
The instructions for making a specific proteins are found in the genes section of DNA on a chromosomes. Proteins — made of chains of hundreds or thousands of amino acids.
DNA, genes and chromosomes
Changing the order of amino acids-makes different protein. Making Proteins Proteins are made on ribosomes in cytoplasm. Code for making proteins — carried from nucleus to ribosomes by a nucleic acid called RNA ribonucleic acid.
Protein production begins when mRNA moves into the cytoplasm. There, ribosomes attach to it. The amino acids that are attached to the 2 tRNA molecules bond. This is the beginning of a protein. The code carried in mRNA directs the order in which amino acid bond. After rRNA lose its amino acids, it moves about cytoplasm and pick up another amino acids like first one.