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| 7227789101 | Gamete | Contains half the number of chromosomes of a body cell | 0 | |
| 7227789102 | Gametes | Sex Cells (Sperm or Ovule) | 1 | |
| 7227789103 | Chromosome | Present in pairs in the nucleus of a cell - Carry the genes | 2 | |
| 7227789104 | Gene | Present on a chromosome and determine the characteristics of an individual Small segment of a chromosome which codes a given trait | 3 | |
| 7227789105 | Allele | Alternate forms of a gene | 4 | |
| 7227789106 | Dominant | An allele which will always show up in an individual if present in a gene pair | 5 | |
| 7227789107 | Recessive | An allele which will show up only if both chromosomes of the pair are carrying the allele | 6 | |
| 7227789108 | Homozygous | Both alleles of the gene pair are the same | 7 | |
| 7227789109 | Heterozygous | Both alleles of the gene pair are different | 8 | |
| 7227789110 | Phenotype | The physical appearance of the characteristic | 9 | |
| 7227789111 | Genotype | The alleles present in a gene pair | 10 | |
| 7227789112 | Monohybrid Cross | A cross involving only one gene | 11 | |
| 7227789113 | Autosome | Refers to all chromosomes that are not sex chromosomes | 12 | |
| 7227789114 | X and Y | Sex chromosomes | 13 | |
| 7227789115 | BB | Homozygous dominant allele pair | 14 | |
| 7227789116 | bb | Homozygous recessive allele pair | 15 | |
| 7227789117 | Bb | Heterozygous allele pair | 16 | |
| 7227789118 | Zygote | A cell produced by joining together an egg and a sperm | 17 | |
| 7227789119 | Pure Breeding | Producing only offspring like the parents when mated with its own kind | 18 | |
| 7227789120 | Pedigree Chart | Genetic history or family tree of an individual | 19 | |
| 7227789121 | Human Karyotype | 46 Chromosomes | 20 | |
| 7227789122 | Homologous Pair | 1 maternal chromosome and 1 paternal chromosome | 21 | |
| 7227789123 | Paternal Chromosome | Chromosome from dad | 22 | |
| 7227789124 | Maternal Chromosome | Chromosome from mum | 23 | |
| 7227789125 | Homologous Chromosomes | Carry genes for the same trait | 24 | |
| 7227789126 | Karyotype | Chromosomes organised in homologous pairs ordered from tallest to smallest with sex chromosomes at the end | 25 | |
| 7227789127 | Sex Chromosomes | X and Y | 26 | |
| 7227789128 | XX | Female | 27 | |
| 7227789129 | XY | Male | 28 | |
| 7227789130 | Abnormality | More or less than 2 chromosomes per homologous pair | 29 | |
| 7227789133 | 23 | Number of chromosomes in human sex cells | 30 | |
| 7227789134 | 46 | Number of chromosomes in human body cells | 31 | |
| 7227789135 | DNA | What genes are made of | 32 | |
| 7227789136 | Deoxyribonucleic Acid | What DNA stands for | 33 | |
| 7227789137 | Cell Nucleus | Where the genetic code (chromosomes) is found in cells | 34 | |
| 7227789138 | Genetic Code | Instructions for the growth and development of the entire organism | 35 | |
| 7227789140 | Inherited | Determined by what we received from our parents | 36 | |
| 7227789141 | Acquired | By action or the environment | 37 | |
| 7227789142 | Trait | Feature whose appearance is determined by inheritance | 38 | |
| 7227789143 | Variation | Difference in characteristics | 39 | |
| 7227789144 | Continuous | Large range in values | 40 | |
| 7227789145 | Discrete | Either/or values | 41 | |
| 7227789153 | Characteristic | Feature of an organism | 42 | |
| 7227789154 | Bell curve or Normal curve | Name given to the shape of a graph showing continuous variation | 43 | |
| 7227795487 | Female on Pedigree Chart | Circle | 44 | |
| 7227795782 | Male on Pedigree Chart | Square | 45 | |
| 7227796259 | Breeding Pair on Pedigree Chart | Joined by a line | 46 |
