Introduction to Punnett Squares A Punnett square is a graphical method for determining all potential genetic outcomes when a cross is conducted. It serves as a probability box, illustrating the chances of each trait occurring. Genetic Traits and Alleles When an organism displays certain traits, these...
Each parent contributes half of the chromosomes for the offspring, and their chromosomes match up to provide the two alleles needed for each gene. There are rare conditions where chromosomes are lost, gained, or combined, and this can cause problems with gene expression. ...