We've learned a bit about DNA and genes but how does inheritance work?

Okay so, so far you've probably covered a bit about DNA, how it's stored in chromosomes and what genes are for. Inheritance is now simply about how a gene that comes from your mum and a gene that comes from your dad comes together to make up you. A simple example we can think about is eye colour. We can show the gene for brown eyes as capital B, this means it is the dominant allele (allele just means version of the gene). All this means is that you only need one of this gene for it to show up in someone's appearance (BB or Bb). The gene for blue eyes we can represent as little b. This means it is recessive. For this one, both of your genes have to be the recessive type for you to show up as blue eyes (bb) Lets run through an example of this. [USE PUNNET SQUARES HERE TO DEMONSTRATE]. Let's say your dad had brown eyes and only had brown eye genes (BB). Then lets say your mum has blue eyes, which we know is recessive so she must be bb. [DEMONSTRATE COMBINATIONS - AND KEEP VARYING THE EXAMPLES].Now let's add some more science-y words to it. The combination of genes you have is called the genotype. This can be homozygous (BB or bb) or heterozygous (Bb) - [make the link of "homo" meaning "same" and "hetero" meaning "different/opposite" to aid in them remembering]. Phenotype is the actual attribute that the person has; in this case, brown eyes or blue. Remember: genotype = genes; phenotype = physical appearance.