A Matter of Selection

1. The part of the plants with the most variations were the leaves of the plants. The branches were very extremely different. Although the feel and the shape of the leaves are very different, the biggest difference is in the Size. The Length by width was kale 13: 5, peas 12:6, and dino kale 6:1, which shows kale and dino kale are extremely different in size, even though they are both kale.
2. I believe that the leaves of the Brassica oleracea plants have a lot of variability in the domestic forms of it. One of the reasons why the different traits like the size of the leaves and shape of them are different is because humans have picked out which traits they wanted for that certain plant. They use selective breeding, which means humans selectively choose which phenotype traits they want to be passed on to their offspring by using decent with modification. That means they choose which traits they want passed down from parent plant to child plant. However, some may of been caused by natural variations, which means they started to branch off and start having different variations in the wild, due to different environments usually. This also means humans are not the direct cause for the plants' variations. These variations are caused by mutations over many generations of the Brassica oleracea, the plant split up into different variations of the plant, due to there being different environment that it needs to adapt to. So, after a number of generations, due too natural variation, you will end up with different Brassica olercea plants all over the country/continent/planet!
3. When looking over the plant, the part of the Brassica oleracea plants that looked relatively the same in all of the ones in our garden were the flowers. All of the plants have 4 petaled yellow flowers, and each of them are around 1 inch in diameter. Now, I believe the reason why the flowers have not changed over time by natural variations and selective breeding, is because there is just no reason to change the color, size, and number of petals of the flower, as they work in any environment, and don't need to be changed. If it needed to change, it would of over the many generations, as the flowers are practically the same on all of the plants, of a 4 petaled yellow flower of a diameter of 1 inch.
4. They make sure the plants with the right traits breed and produce offspring, while those with lack luster traits aren't. They make it so the ones with traits that pop out a little more are the ones that make the other flowers, and breeding like this is how they breed animals and plants. It does take a while, or many generations, but eventually the desired traits will stick out a lot more, while the undesired traits are thrown away like moldy bread.