Wings of bats are: a. plesiomorphic (ancestral) feature for mammals b. plesiomor

Question

Wings of bats are: a. plesiomorphic (ancestral) feature for mammals b. plesiomorphic feature for bats and birds c. synapomorphic (shared-derived) feature for vertebrates d. synapomorphic feature for bats e. synapomorphic feature for bats and birds Modern phylogenetic trees express Darwin s idea of: a. descent with modification b. mutations in DNA c. natural selection d. convergent evolution e. inheritance of acquired traits Carl Linnaeus ("Systema Naturae", 1758) based his systematic (classification) principles on: a. common origin b. anatomical similarity c. Mendelian genetics d. natural selection e. inheritance of acquired traits

Explanation / Answer

Wings of bats are d) synapomorphic feature for bats.

Synapomorphy is a derived trait shared by two or more groups but not found in other closely related groups. Bats are mammals. Bats have two groups - mega chiroptera and micro chiroptera derived from a common ancestor. They posses wing which is not found in any other groups of mammals. So, it is a synapomorphic feature for bats in relation to mammals.

This is not a synapomorphic or plesiomorphic feature for bats and birds as bats and birds have evolved from different ancestors.

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