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In cladograms, sister groups are _______ . a. inbred b. the same age c. represented by nodes d. in the same family
Biology: The Unity and Diversity o...
Biology: The Unity and Diversity o...
In cladograms, sister groups are _______ .
- a. inbred
- b. the same age
- c. represented by nodes
- d. in the same family
Concept introduction: Cladogram is the diagrammatic representation of hypothetical relationship between different groups of animals called as phylogeny. It is usually used to compare different animal groups based on their shared ancestry. The term “sister groups” used in phylogenetic analysis is meant for different groups with the same age.
Explanation of Solution
Reason for correct answer: The pictorial representation of different animal groups based on their evolutionary history and ancestral history is known as a cladogram. It is composed of several nodes from which several animal groups emerge out called sister groups, representing their closest relatedness and the same period of origin.
Option b. is given as “the same age”. Every cladogram contains several nodes and several sister groups arising from them. Each sister group arising from a single node indicates that they have originated from a common ancestor at the same period of time.
Therefore, option b. is the correct answer.
Reason for incorrect answer:
Option a...
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