Alternative splicing is often associated with weak splice sites.

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#Id: 2154

#Unit 9. Diversity of Life Forms

Second positions most slowly evolve.

TLS Online TPP Program

#Id: 2155

#Unit 9. Diversity of Life Forms

Use more rapidly evolving parts of the genome to estimate phylogenies in the recent past. More slowly evolving parts for deeper evolutionary time.

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#Id: 2156

#Unit 9. Diversity of Life Forms

Radiation- Several species arise from a common ancestor over a short time

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#Id: 2157

#Unit 9. Diversity of Life Forms

Phylogenetic relationships among species in a radiation are difficult to determine for two related reasons.                                                                 

a. During the short time between two successive speciation events, few new mutations are fixed.                                                                               

b. Incomplete lineage sorting may occur during rapid diversification.

TLS Online TPP Program

#Id: 2158

#Unit 9. Diversity of Life Forms

TLS Online TPP Program

#Id: 2159

#Unit 9. Diversity of Life Forms

Animal Kingdom is characterized by multicellular, eukaryotic organisms. The cells lack cell walls.