#Question id: 7007
#XL - T Zoology
The change in the state of specification of imaginal disc of Drosophila to that of a different disc type is known as:
#Question id: 7286
#XL - R Botany
Which of the floral whorls is affected in apetala 3/pistillata (ap3/pi) mutants?
#Question id: 7288
#XL - R Botany
Following statements are regarding to the expression of genes in floral quartate model in Arabidopsis thaliana.
A. Sepals- AP1(heterodimer) + SEP(homodimer)
B. Petals-AP1(monomer)+PI(monomer)+AP3(monomer)+SEP(monomer)
C. Stamens- AP3(monomer)+PI(monomer)+AG(monomer)+SEP(monomer)
D. Carpels- AG(homodimer)+SEP(homodimer)
Which of the following genetic combinations are incorrect?
#Question id: 7289
#XL - R Botany
The following scheme shows the flowering status of a plant species and the photoperiodism. Which of the following conclusions is most appropriate?
#Question id: 7290
#XL - R Botany
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: 7291
#XL - R Botany
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?