Each individual has two genes for each trait Each parent passes on one gene for each trait. Example: Tall plant crosses with a short plant Parents: T T x tt Offspring: Tt -Because of the dominant trait this off
It involves delivering genes from the parents tothe offspring. The so-called father of this theory was Gregor Mendel. The primitive geneticistdid much of his working with Pisum sativum, otherwise known as the common pea plant.Through his work he was able to determine typical phenotype ratios ...
They foundepigenetic changesat 19 sites mapped to 14 genes in the children of fathers who smoked before the age of 15. These changes in the way DNA is packaged in cells (methylation) regulate gene expression (switching them on and off) and are associated with asthma, obesity and wheezing. ...