Question

can you identify the major theme illustrated by each of the following examples? if necessary, you may review the themes in chapter 1 of your book. match the themes on the left with the examples on the right. not all themes will be used. interactions within biological systems pathways that transform energy and matter relationship of structure to function information flow evolution every cell in your body was produced through successive rounds of mitosis, starting from the zygote. mitosis exactly duplicates chromosomes. therefore, every cell in your body has the same dna as the zygote. similar homeotic genes help direct embryonic development in nearly every eukaryotic organism examined. these similarities suggest that these homeotic genes arose very early in the history of life, and that the genes have remained remarkably unchanged. some eukaryotes consist of multiple cells specialized for different tasks within the organism. gene regulation allows this specialization. a prokaryote, being a single cell, does not require this elaborate regulation of gene expression. some proteins that trigger metabolic changes in cells are broken down within a few minutes or hours. this selective breakdown of proteins allows the cell to adjust the kinds and amounts of its proteins in response to changes in its environment.

Explanation:

• The first example is about the production of cells through mitosis and DNA duplication, which is related to how information (DNA) is passed on and regulated, so it matches "Information flow".
• The second example mentions similar homeotic genes across eukaryotic organisms and their evolutionary origin and conservation, so it matches "Evolution".
• The third example is about gene regulation in multi - celled eukaryotes (for cell specialization) and its absence in single - celled prokaryotes, which is about how information (genes) is regulated, so it matches "Information flow".
• The fourth example is about the breakdown of proteins to adjust protein composition in response to the environment, which is related to how information (protein levels) is regulated, so it matches "Information flow".

Answer:

1. Information flow
2. Evolution
3. Information flow
4. Information flow