Explain the importance of DNA replication. To do this, you must clarify the relationship between DNA replication and the survival of a species.1. DNA replication is vital for the survival of species, because through replication, identical copies of genes can be made, ensuring their ability to repair themselves when damaged (through the process of mitosis). DNA replication occurs when single-stranded chromosomes replicate in order to create double-stranded chromosomes, which are essential for the creation of daughter cells. This is necessary because for a zygote to grow, double-stranded chromosomes are required. However, when gametes are made, they are single-stranded, requiring DNA replication to produce double-stranded chromosomes. This also allows species variations to exist. , by meiosis. This means that if factors such as environmental changes were to hinder the survival of a certain species, it would be able to produce modified genes to ensure better adaptations to new conditions within the gene, ultimately ensuring the survival of that species. .2. Explain the relationship between polypeptides and proteins. To do this, you need to clarify the relationship between the two. Amino acids are the building blocks of all proteins, which are complex molecules containing elements such as nitrogen, oxygen, carbon and hydrogen. Amino acids linked by peptide bonds create polypeptides. When there are many polypeptides linked together in a chain and it is folded to serve a particular function, it creates a protein. However, if it were not folded into a certain shape, it would not become a protein, but simply a polypeptide. Although ultimately polypeptides and proteins are chains of amino acids, middle of paper..... In genetics there are both positive and negative aspects. Positive aspects include the fact that by creating genetically modified species it introduces diversity into an ecosystem, thus contributing to the survival of the species. However, this is countered because in many cases, genetically modified species become predominant, leading to a loss of diversity within the species, overall affecting its survival rate. Additionally, transgenic species can have negative impacts on the broader environment, including animals and vegetation in the ecosystem. Additionally, with recent transgenic species, it is difficult to predict the effects they will have on the environment because they have not yet been recorded and are unknown. The creation and use of transgenic species raises many questions, but it is a never-ending debate. it seems unlikely that this will be decided in the near future.