| What is Mitosis? | A cell division that produces two identical daughter cells |
| What if a person eye colour is bb, what would there eye colour? | bb is a recessive gene meaning that the persons phenotype would be blue. |
| What is a Somatic Cell? | Somatic cells are all body cells except the sex cells (sperm and ova) |
| Are Somatic Cells diploid cells? | Indeed they are because they have two sets of genetic information (one set from daddy & one set from mummy) |
| What does Mitiosis actually do? | The process of mitosis replaces the damaged cells in our body. |
| Provide three example on what mitiosis replaces. | Most common ones are intestine, skin, bone and blood. |
| What are the 4 phases of mitiosis? | Prophase, Metaphase, Anaphase and Telophase |
| What is prophase? | Chromosomes become visible and double (replicate). |
| What is Metaphase? | Chromosomes that line up along the middle of the cell. |
| What is Anaphase? | Chromosomes move to opposite ends of the cell |
| What is Telophase | Cell splits into two cells (daughter cells). |
| What is prophase in meiosis? | There is no prophase because the chromosomes do not double. |
| What is metaphase in meiosis ? | Chromosomes line up along the middle of the cell. |
| What is Anaphase in meiosis? | Chromosomes move to opposite ends of the cell |
| What is telophase in meiosis? | Cell splits into four haploid cells. |
| What are they called if two Alleles are the same? | If both alleles are the same it is said to be Homozygous (BB or bb) |
| What are they called if two Alleles are different? | If the two alleles are different it is said to be Heterozygous (Bb). |
| What if the alleles of a person is Bb, what colour would their eye be? | The B is dominant gene which would result in the person having brown eyes. |
| What is meiosis? | Cell division that produces four daughters that are not genetically identical. |
| What is Mitosis? | A cell division that produces two identical daughter cells |
| How is sex determined by genes | One of the 23 pairs of chromosomes can be either XX for Female or XY for Male |
| What is an allele | Different versions of the same gene |
| What is a recessive allele | A version of a gene where two copies are needed for it to be expressed |
| What is a dominant Allele | A version of a gene where only one copy is needed for it to be expressed |
| What is phenotype | The visible characteristic |
| Type of cells meiosis produce | Sex cells(EGG AND SPERM) |
| What is a sex linked characteristic | A characteristic where the gene responsible is located on a sex chromosomes |
| What is co dominance | When both alleles affect the phenotype |
| What do pedigrees show | The inheritance of an allele over generations |
| What is a gene | A section of DNA that codes for specific protein |
| What is a chromosome | Tightly packaged DNA in a thread-like structure that carries information in the form of genes. |
| Outline the theory of natural selection | Selection pressures
Random mutation gives organism a selective advantage
Organism is better adapted to the environment and survives
Organism reproduces, passing on allele |
| What is evolution | A gradual change in the inherited traits within a population over time. |
| What is mutation? | A random change to the sequence in DNA which results in genetic variants |
| What is genetic variation | Variations in the genotypes of organisms of the same species due to the presence of different alleles
Creates differences in phenotype |
| What are the two causes of variation within a species | Genetics
Environmental |
| What is variation | Differences in the characteristics of individuals population |
