2363465
| Question | Answer |
| Nucleotide | Section of DNA made up of: 1 pentose sugar 1 Phosphate group 1 Base (Nucleic Acid) |
| Complementary | Adenine always bonds with Thymine Cytosine always bonds with Guanine They are complementary |
| Purines | Consist of a six-membered and a five-membered nitrogen-containing ring, fused together (Adenine and Guanine) |
| Pyrimidine | Have only a six-membered nitrogen-containing ring (Thymine, Cytosine and Uracil) |
| Gene | A section of DNA that codes for making a polypeptide |
| Triplet Code | 3 bases code for an amino acid |
| Chromosome | Thread-like structure made of protein and DNA, passes hereditary information on |
| Homologous Chromosome | 2 chromosomes determining the same characteristics (one maternal, one paternal) |
| Allele | One of the different forms of a gene |
| Meiosis | Cell division that produces 4 haploid cells (half the chromosomes) they are all genetically different and are called 'daughter cells' |
| Mitosis | cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus |
| Locus | Position of a gene on a chromosome |
| Independent segregation | Homologous pairs randomly separate during meiosis 1 into separate cells |
| Crossing over | The process where chromatids break and rejoin with their homologous chromosomes to exchange pairs |
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