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TLS Online TPP Program

#Question id: 7303

The ‘quartet model’ explains how the protein products of the ABCE-function genes might interact to control floral organ identity. Following statements are based on this model. Which one of them is incorrect?

#I Life Science/ Life Sciences Group – I-V
  1. There are four combinations of floral MADS-box proteins. SEP proteins may form heterodimers with A (AP1) and B (AP3/ PI) proteins (for petals), B (AP3/PI) and C(AG) proteins (for stamens), and C (AG) protein (for carpels).
  2. All these genes, with the exception of AP2 (and its homologues), are MADS-box genes, a broad family of eukaryotic genes that encode transcription factors containing a highly conserved DNA-binding domain (MADS domain).
  3. The protein quartets are transcription factors and may function by binding to the promoter regions of target genes.

  4. According to the model, one dimer of each tetramer recognize two different sites on the same DNA strand, thus bringing these areas into proximity via DNA-bending.

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TLS Online TPP Program

#Question id: 3445

#SCPH28 | Zoology

Which one of these concepts is not associated with sociobiology?
TLS Online TPP Program

#Question id: 684

#SCPH01 Biochemistry

Protein subunits in a multisubunit protein are held to each other primarily by
TLS Online TPP Program

#Question id: 5535

#SCPH06 I Botany

What type of animal forms a trophoblast for the duration of its early development?
TLS Online TPP Program

#Question id: 2319

#SCPH06 I Botany

Peroxisomes function to
TLS Online TPP Program

#Question id: 321

#SCPH06 I Botany

Water clustered about nonpolar molecules contribute to hydrophobic interactions because