- Which part (anatomy) or characteristic of the Brassica oleracea plants seems to exhibit the most variation (greatest number of different forms)? Which part or characteristic of the Brassica oleracea plants seems to show the greatest range of variation (biggest difference between one extreme and its opposite)? Use and include data collected from multiple measurements to support your answer.
The part of the plant that showed the most variation was the leaves. The length, width, and appearance of the leaves were different. I noticed that some of the leaves would be as long as 8.1 inches, while the shortest leafs length would be as small as 2.3 inches. The largest width being 5.7 inches and the smallest being 2.3. The leaves of the plants also showed variation in appearance. Some plants had light green leaves while others had dark purple leaves. The part of the plant that offered the most range was also the leaves. The leaves had the largest contrast from each other. I even noticed the texture on some of the the plants were different, some were sooth while others more rough and crinkly.
2.Using the terms that follow, explain why you think there is so much variability in the domestic forms of Brassica oleracea: traits, selective breeding, artificial selection, genes, descent with modification, natural variations, mutations
When plants are growing, there are many things that impact what they look like when fully grown. There are many traits and natural variations that can be inherited from the parent plant. The plant's traits that come from the parent plants are in the form of genes, which count for the plant's phenotype and genotype. The offspring will be a mix of the dominant and recessive traits from both parents. Everything doesn't always come naturally though. Some changes come from outside interaction, including: artificial selection, which is when an outside source for example humans chooses which variants of the plants get to reproduce, and selective breeding where something influences which plant breeds with which. This effects which type of phenotype and genotype is actually present in the offspring. Whether it'is naturally or unnaturally bred, some plants get mutations which can sometimes effect many things. Some mutations can cause a physical difference, some genetic and some do nothing at all. Mutations can be a good thing, which lead to variation in the species.
3.Which part (anatomy) of the Brassica oleracea plants seems to be most consistently the same in all of the examples in our garden, regardless of how extreme the differences between other parts of the same plants may be? Why do think this is so? Again, use and include data collected from multiple measurements to support your answer.
The part of our Brassica Oleracea plant that appeared the most similar with all the other plants in the WGHS Garden were the stems of each plant. I think that the different plants heights are consistent because they are all in the same plant family. I also think that this is because of the changing weather in California the plants would have to find an ideal height where they can withstand both hot and cold weather. The average stem length was about 15 inches tall, ours measuring in at 10 inches and the tallest plant measuring at 16 inches. This shows that compared to the leaves of the different plants, the stems of each individual plant were much more similar.
4. What would plant breeders have to do in order to get the body part or characteristic you described above (in your response to question #3) to become much different than it is presently?
In order to change what the plant's stem looks like, breeders would have to put your plant in a completely different environment. In addition to changing the environment, breeders would have to choose plants to breed artificially so that the new plants have a greater chance of being different. Breeders would need to experiment with different conditions to see how they affect what your plant looks like.
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