Sunday, March 26, 2017

A Matter of Selection




1.There are many prominent features relating to the variation of the plant species Brassica Oleracea. These plants varied in color, plant size, length, width, leaf size, and the stem’s length and width. As I walked around the garden, I examined the leaves color and texture rather than any other factors. I believe these have a higher level of variation within the species. I took my time looking at every single leaf from each and every plant. Our plant the Brussels sprout has thick luscious leaves that have variations of a refreshing green coloring and a soft white vein appears on each leaf's surface. In my observations plant A (Kale) has a different texture and color. Its leaves were stiff and dark colored, and it’s veins made different patterns on the leaf’s surface. Kale has bumpy edges on its leaf and its color is more like a dark green almost like turquoise, although these plants are from the same species they vary. This is why natural variation is so cool because when observing the plants you can find little differences that make that plant unique. Those genetic changes make a difference but they will always be the same species. 


2.Ever wondered why plant species have so much variety? Thanks to artificial selection and other factors, a plant species can branch out into different varieties of the same plant. A wild plant goes under a different type of selection. Natural selection comes into play when the plant isn’t being cared for by a human. In other cases, many humans love to take care of their plants. Since they are cared for, they can change certain factors that can change the plant in a plethora of ways. In those cases humans cross-breed their plants to obtain a certain trait. These traits can make the plant superior to any other type of plant. The processed is called artificial selection. Artificial selection allows those specific traits to be passed down to future offspring which is useful in so many cases. This has made Brassica Oleracea so diverse and a dominant plant species.





3.I noticed a main trait within the species, it was the stems size. The stem seemed to have the same thickness. The height of the stem itself obviously varies with each plant. However the thickness is very consistent. I measure the diameter of the stem it was about 1 or 1.3 cm thick. I believe their common ancestors had thick stems as well. It appears to be very dominant in the Brassica Oleracea. I concluded maybe they have this thick stem to make the plant more stable and durable to all certain types of weather and climates, if the thick stem is dominant in this species this means that the diameter of the stem is very important.





4.In order for scientists to engineer a plant to have a thick stem, they need to genetically change and test the seed. They would need to inject or cross-breed with the desired genes that code for the thick stemmed traits. This would reassure that the plant would have those traits because cross breeding or injecting the desired gene will for sure make a dominant thick stemmed gene to appear on the phenotype.

Friday, March 3, 2017

This yellow flower is a big part of the brassica Plants because it makes them Healthy, These small flowers have a strong reproductive system,there known as angiosperms.




This is the male reproductive system of a flower, the stamen hold a strong and very important role.they make the male gametes and while examining the stamen are full with pollen.








Brassica Flower Dissection

This yellow flower is amazingly beautiful.they are a big part of the garden and they help the Brassica plants be healthier.These little flowers have an amazingly fast reproductive system,and they are known as angiosperms.Angiosperm is a consistent part of male and female parts in the same organism.Which means that these flowers reproduce quick.

This a photo of male reproductive anatomy.The anthers hold a strong a very important role.They make the male gametes and while examining the anthers they are loaded with pollen


This photo is of the we are looking at the female reproductive anatomy of the flower.If u look really close you can see this part as the carpel.The carpel is also called a stem.At the very top you can see the stigma.Since the stigma is very sticky some pollen grains end up sticking on the the stigma.