3.24C

3.24B

3.24 A

3.16 DNA and Genetic information

• One chromosome contains thousands of genes
  
• There are 4 kinds of bases called: Adenine, Guanine, Cytosine and Thymine.

• They are found in DNA in the pairs: Thymine-Adenine and Guanine-Cytosine. 
• When you magnify one gene you can see a double helix which appear parallel.
• the order of bases is always the same (ATGC) this all constructs protein for the cytoplasm

3.15 Genes

• A gene is a section of a molecule of DNA
• Genes are located in the nucleus
• A double helix shaped gene carries information of the characteristic of the organism
• Information of the gene is passed to the cytoplasm.
• After passing into the cytoplasm the gene is then turned into a protein
• Protein controls the characteristic of the gene.

3.14 Chromosomes

• A chromosome is the genetic information inside a cell. 
• Genes control the production of protein which controls a characteristic.  
• The DNA forms a shape called "the double helix"
• There are 1000's of genes in a chromosome
• Each different species have different amount of chromosomes. 
• Chromosomes operate in pairs which are based on length.

3.1 Describe the differences between sexual and asexual reproduction