Hey there, pea-ple! Did you know about the great scientist named Gregor Mendel? Well, he was called the “Father Of Genetics” because he is the one who one day thought: “Hmm… I wonder what happens if I cross-pollinated pea plants.”
I think we are going to be parents.
His first experiment was called F1. He decided to cross-pollinate one green seed and one yellow seed by using something called a Punnett square.
“How could this be possible?”
Why are all our kids yellow?!!
However, when the two parent seeds had offspring, all four of the offspring were yellow.
He soon began to understand that there were two different type of traits, and he called them the dominant trait and the recessive trait.
Dominant trait: (yellow seed, YY) a trait that will be seen as a phenotype, and as an allele in a genotype. It also covers up the recessive trait.
Recessive trait: (green seed, yy) a trait that is NOT seen as a phenotype but is as an allele in a genotype.
These are the different possibilities of offspring that the green and yellow seed could have.