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TLS Online TPP Program

#Question id: 4961

An early consequence of the release of oxygen gas by plant and bacterial photosynthesis was to

#Unit 11. Evolution and Behavior

  1. make life on land difficult for aerobic organisms.

  2. change the atmosphere from oxidizing to reducing.

  3. make it easier to maintain reduced molecules

  4. cause iron in ocean water and terrestrial rocks to rust (oxidize).

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TLS Online TPP Program

#Question id: 7064

#Unit 5. Developmental Biology

Which of the following signals play important roles in neurulation and cell fate patterning of the neural tube?
TLS Online TPP Program

#Question id: 7065

#Unit 5. Developmental Biology

It is form in the wound epidermis of an amputated salamander limb and acts similarly to the apical ectodermal ridge during normal limb development:
TLS Online TPP Program

#Question id: 7066

#Unit 5. Developmental Biology

Drosophila zygotic genes expressed in broad (about three segments wide), partially overlapping domains, known as:
TLS Online TPP Program

#Question id: 7067

#Unit 5. Developmental Biology

Which gene on the Y chromosome transforms the bipotential gonad into a testis in mammals?

TLS Online TPP Program

#Question id: 7068

#Unit 5. Developmental Biology

In sea urchin gene regulatory network (GRN) is
TLS Online TPP Program

#Question id: 7069

#Unit 5. Developmental Biology

Regeneration is: