Answer:
Homologous structures are structures that are similar in related organisms because they were inherited from a common ancestor. These structures may or may not have the same function in the descendants. Figure below shows the hands of several different mammals. They all have the same basic pattern of bones
Answer:
elastic arteries, muscular artery, arterioles, capillary, venules, medium veins, large veins,
Explanation:
There are three types of blood vessels a) arteries b) capillaries and c) Veins. Arteries are responsible for carrying blood from heart to all other parts of the body. The arteries arising from heart are large in size which then keep on branching and becoming small enough for cellular exchange.
Capillaries are intermediary to veins and the arteries as they allow exchange of nutrient and release of waste product to and from from cells.
Lastly, veins carry deoxygenated blood from organs to the heart. Vieins become larger in size as they get close to heart.
Hence, the correct order is
elastic arteries, muscular artery, arterioles, capillary, venules, medium veins, large veins,
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In diseases, similar patterns of mutations in harmless genes may possibly be a cause or an effect of the disease. To investigate if it is a cause, it is worth looking into the proteins synthesized by the gene and whether it’s structure or functionality is affected by the pattern observed. It is also worth looking into the downstream effects possibly caused by the pattern in the gene. The gene may encode a non coding region which could affect post transcriptional splicing for example.
