Auxin moving downward from the shoot moves basipetally (toward the base) until it reaches the root–shoot junction.

TLS Online TPP Program

#Id: 6156

#Unit 3. Fundamental Processes

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#Id: 4778

#Unit 5. Developmental Biology

If the P2 cell is removed at the early 4-cell stage, the EMS cell will divide into two MS cells, and no endoderm will be produced.

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#Id: 9042

#Unit 4. Cell Communication and Cell Signaling

Heterotrimeric G proteins directly bind to and are activated by G protein coupled receptors.

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#Id: 2096

#Unit 8. Inheritance Biology

EFFECTS OF CHROMOSOME DUPLICATIONS- Bar phenotype in Drosophila

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#Id: 1030

#Unit 5. Developmental Biology

In primary neurulation, 

cells surrounding the neural plate direct the neural plate cells to proliferate, invaginate into the body, and separate from the surface ectoderm to form an underlying hollow tube.