#Question id: 7297
#Unit 5. Developmental Biology
How is the ABC model for floral identity in Arabidopsis similar to the models for homeotic gene function derived from studies in Drosophila?
#Question id: 7295
#Unit 5. Developmental Biology
If a long-day plant has a critical night length of 9 hours, which 24-hour cycle would prevent flowering? (SS)
#Question id: 7293
#Unit 5. Developmental Biology
In agamous mutant (flower within flower phenotype) which of the following statements is valid?
#Question id: 7292
#Unit 5. Developmental Biology
How is plant cell cytokinesis different from animal cell cytokinesis?
#Question id: 7291
#Unit 5. Developmental Biology
Five
different genes are known to specify floral organ identity in Arabidopsis: APETALA1 (AP1), APETALA2 (AP2), APETALA3 (AP3), PISTILLATA (PI),
and AGAMOUS (AG).
Which one of the following statement is incorrect?
#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?