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TLS Online TPP Program

#Id: 2144

Apomorphic character- Derived specialized character
a. Synapomorphic character- Derived trait is share
b. Autapomorphic character- Derived trait that is unique to taxon

#Unit 9. Diversity of Life Forms #Concepts of species and hierarchical taxa #Part B Pointers

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#Id: 522

#Unit 2. Cellular Organization

An Interrupted Gene Consists of Exons and Introns.

#Id: 523

#Unit 2. Cellular Organization

Exon Sequences Under Positive Selection Vary but Introns Are Conserved

#Id: 524

#Unit 2. Cellular Organization

Erwin Chargaff gave four “rules,” known as parity rule for duplex DNA.

#Id: 525

#Unit 2. Cellular Organization

The second parity rule applies more closely to introns than to exons.

#Id: 526

#Unit 2. Cellular Organization

The length of Introns is variable while exons are almost constant in length.

#Id: 527

#Unit 2. Cellular Organization

Genes that share a common ancestry have similar organizations with conservation of the positions (of at least some) of the introns.