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TLS Online TPP Program

#Question id: 4699

The theory of evolution is most accurately described as

#Unit 9. Evolution & Diversity of Life Forms

  1. an educated guess about how species originate.

  2. one possible explanation, among several scientific alternatives, about how species have come into existence.

  3. an opinion that some scientists hold about how living things change over time.

  4. an overarching explanation, supported by much evidence, for how populations change over time.

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TLS Online TPP Program

#Question id: 31255

#Unit 5. Developmental Biology

When the hypostome is brought into contact with the trunk of an adult hydra, it induces expression of the__________ in a Wnt-dependent manner.
TLS Online TPP Program

#Question id: 31256

#Unit 5. Developmental Biology

If the Wnt signaling inhibitor GSK3 is itself inhibited throughout the body axis in hydra, results
TLS Online TPP Program

#Question id: 31257

#Unit 5. Developmental Biology

Which of the following gene is expressed by all neoblasts and has become the most common marker for their identification across planarian species?
TLS Online TPP Program

#Question id: 31258

#Unit 5. Developmental Biology

In salamanders, regeneration blastema formed from:
TLS Online TPP Program

#Question id: 31259

#Unit 5. Developmental Biology

During salamander limb regeneration, which of the following functionally equivalent to apical ectodermal ridge during normal limb development?
TLS Online TPP Program

#Question id: 31260

#Unit 4. Cell Communication and Cell Signaling

A malignant neoplasm of epithelial origin such as endoderm (gut epithelium) or ectoderm (skin and neural epithelia) known as: