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TLS Online TPP Program

#Question id: 8696

There is some evidence that reptiles called cynodonts may have had whisker-like hairs around their mouths. If true, then hair is a shared ________.

#Unit 9. Diversity of Life Forms
  1. derived character of mammals, even if cynodonts continue to be classified as reptiles
  2. derived character of all vertebrates and not of the mammal clade
  3. ancestral character of the all vertebrates, but only if cynodonts are reclassified as mammals
  4. derived character of mammals, but only if cynodonts are reclassified as mammals
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TLS Online TPP Program

#Question id: 14837

#Unit 5. Developmental Biology

Each of the three major strategies of cell specification summarized in TABLE  offers a different way of providing each embryonic cell with a set of determinants (often transcription factors) that will activate specific genes and cause the cell to differentiate into a particular cell type:

Choose right combinations;
TLS Online TPP Program

#Question id: 3299

#Unit 11. Evolution and Behavior

There are four alleles, A1, A2, A3 and A4 in equal abundance in frequency. Hardy-Weinberg equilibrium frequencies of the total heterozygote would be
TLS Online TPP Program

#Question id: 32425

#Unit 2. Cellular Organization

Which of the following elongated protein binds along the groove of the actin filament helix?
TLS Online TPP Program

#Question id: 1068

#Unit 4. Cell Communication and Cell Signaling

The best-known examples of viruses that cause latent infections are
TLS Online TPP Program

#Question id: 18726

#Unit 13. Methods in Biology

ligation takes place between __________