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#Question id: 7287

Following statements are regarding to the the floral quartet model and the underlying ABCDE model of organ identity determination in Arabidopsis thaliana.

A. Five floral organ identities (sepals, petals, stamens, carpels, and ovules) are specified by the formation of floral organ-specific tetrameric complexes of MADS-domain transcription factors that bind to two nearby enhancer elements, forming a DNA loop in between.

B. A complex of two class A proteins (APETALA 1) and two class E proteins  (SEPALLATA) determines petal identity.

C. A complex of one class A protein, one class E protein, and one of each of the class B proteins (APETALA 3 and PISTILLATA) determines sepal identity.

D. A complex of one class E protein, two class B proteins, and one class C protein (AGAMOUS) determines stamen identity, while a complex of two class E proteins and two class C proteins determines carpel identity.D. A complex of one class E protein, two class B proteins, and one class C protein (AGAMOUS) determines stamen identity, while a complex of two class E proteins and two class C proteins determines carpel identity.

E. A complex of one class E protein, one class C protein, and one of each of the class D proteins (SHATTERPROOF and SEEDSTICK) controls ovule identity.

Which of the following combination are correct?

#I Life Science/ Life Sciences Group – I-V
  1. A and B
  2. A, B, and C
  3. A, B, C and D
  4. A, D and E
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TLS Online TPP Program

#Question id: 4728

#SCPH06 I Botany

The genotype r/r ; p/p gives fowl a single comb, R/– ; P/– gives a walnut comb, r/r ; P/– gives a pea comb, and R/– ; p/p gives a rose comb. Which of the following parental genotype would produce 3/8 Walnut comb, 1/8 pea comb, 3/8 rose comb and, 1/8 single comb?
TLS Online TPP Program

#Question id: 15733

#SCPH01 Biochemistry

Embryo culture technique is applied to
1. Overcome seed dormancy
2. Prevention of embryo abortion in wide crosses
3. Formation of protoplast
4. Shortening of breeding cycle
Which option has incorrect statement
TLS Online TPP Program

#Question id: 15650

#SCPH05 I Biotechnology

For scaling up of a bioreactor, the following parameter is assumed to be constant
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#Question id: 2666

#SCPH05 I Biotechnology

A cell does not want to waste energy synthesizing the amino acid arginine if arginine is present in its diet. Therefore, when arginine is present, it activates a repressor protein to prevent transcription of genes that code for enzyme to make arginine. This is an example of what type of regulation?
TLS Online TPP Program

#Question id: 3911

#SCPH28 | Zoology

When a sequence of double-strand DNA is displayed