#Question id: 13180
#Unit 10. Ecological Principles
#Question id: 9154
#Unit 9. Diversity of Life Forms
The main reason polar regions are cooler than the equator is that ________.
#Question id: 7290
#Unit 5. Developmental Biology
Following figure regarding to regulatory network in the Arabidopsis shoot meristem stem-cell niche.
A. The transcription factor WUS is synthesized in the cell A and moves via plasmodesmata into cell B, where one of its functions is to induce expression of the CLV3.
B. The transcription factor CLV3 is synthesized in the cell A and moves via plasmodesmata into cell B, where one of its functions is to induce expression of the WUS.
C. Secreted CLV3 protein from cell B binds to the receptor protein kinase on the surface of cell A; there, it activates a signal that represses WUS transcription.
D. Secreted WUS protein from cell B binds to the receptor protein kinase on the surface of cell A; there, it activates a signal that represses CLV3 transcription.
Which of the following combination is correct?
#Question id: 15768
#Unit 5. Developmental Biology
#Question id: 26339
#Unit 2. Cellular Organization
According to fourth parity rule proposed by Erwin Chargaff which of the following statement are most appropriate