If two modern organisms are distantly related in an evolutionary sense, then one should espect that a. they live in very different habitats. b. they eat very different types of food c. their chromosomes should be very similar d. they should share fewer homlogous structures than two more closely related organisms. e. they should be members of the same species
Biology · High School · Thu Feb 04 2021
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d. they should share fewer homologous structures than two more closely related organisms.
When considering the evolutionary relationships between two modern organisms, those that are distantly related are expected to share fewer homologous structures than organisms that are more closely related. Homologous structures are features that are similar in structure and are often though not always, similar in function, which can be traced back to a common ancestor. Thus, the greater the evolutionary distance between two species, the less they tend to have in common, including fewer shared homologous structures due to the accumulation of differences over time.