TLS Online TPP Program

#Question id: 1764


Which of the following is NOT a feature of germinal center B-cells?

#Unit 4. Cell Communication and Cell Signaling
  1. Immunoglobulin gene class switching

  2. Apoptosis

  3. Initial VDJ rearrangement

  4. Somatic hypermutation

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TLS Online TPP Program

#Question id: 8702

#Unit 9. Evolution & Diversity of Life Forms

The question refers to the following table, which compares the percent sequence homology of four different parts (two introns and two exons) of a gene that is found in five different eukaryotic species. Each part is numbered to indicate its distance from the promoter (for example, Intron I is the one closest to the promoter). The data reported for species A were obtained by comparing DNA from one member of species A to another member of species A.

Regarding these sequence homology data, the principle of maximum parsimony would be applicable in ________.

TLS Online TPP Program

#Question id: 8703

#Unit 9. Evolution & Diversity of Life Forms

In a comparison of birds and mammals, having four limbs is ________.

TLS Online TPP Program

#Question id: 8704

#Unit 9. Evolution & Diversity of Life Forms

To apply the principle of maximum parsimony to construction of a phylogenetic tree, ________.

TLS Online TPP Program

#Question id: 8705

#Unit 9. Evolution & Diversity of Life Forms

If you were using cladistics to build a phylogenetic tree of cats, which of the following would be the best outgroup?

TLS Online TPP Program

#Question id: 8707

#Unit 9. Evolution & Diversity of Life Forms

Use the figure to answer the following question


The phylogenetic tree shown ________.

TLS Online TPP Program

#Question id: 8708

#Unit 9. Evolution & Diversity of Life Forms

Concerning growth in genome size over evolutionary time, which of these is least associated with the others?