During Brassinosteroid (BR) signal transduction pathway two forms exist,

1) In absence of Brassinolide

2) In presence of Brassinolide

a) BKI1 is phosphorylated and dissociates from the plasma membrane

b) BRI1 phosphorylation, and promotes BRI1–BAK1 heterodimerization, bringing their cytoplasmic domains together for interaction, transphosphorylation

c) BRI1 and BAK1 can form homodimers and both undergoes endocytosis and recycling

d) BIN2 kinases Phosphorylate transcriptional factor BES1 and BZR1 and these Phosphorylated proteins are shortlived and are degraded in the proteasome

e) BSK proteins activate BSU1 phosphatase which dephosphorylated BIN2 is degraded by the proteasome system

f) In absence of BIN2, dephosphorylated  transcriptional factor BES1 and BZR1 form heterodimers with different transcription factors and bind E-box sequences to activate genes.

Find out the correct match with in absence and presence of BL in BRs signal transduction pathway

#Question id: 13143

#Unit 10. Ecological Principles

The Norway rat (Rattus Norvegicus), a widespread pest, was controlled for about a decade by the anticoagulant warfarin. This chemical substance, placed in food pellets, is absorbed by the intestinal tract and inhibits the clotting of blood. After a population decline for about 10 years, rat populations increased and stabilized. In one European population, as illustrated in the graph below, the percentage of rats resistant to warfarin has remained fairly stable over a number of years.

Resistance to warfarin is governed by a dominant autosomal gene, R. More than 15 percent of the resistant animals are heterozygous at this locus (Rr). The table below indicates the response to warfarin and relative reproductive fitness of individuals that are homozygous or heterozygous for the dominant gene (R). The RR individuals have a 20-fold increase in vitamin K requirement over individuals.

#Question id: 24569

#Unit 10. Ecological Principles

#Question id: 24570

#Unit 10. Ecological Principles

#Question id: 24571

#Unit 10. Ecological Principles

In which case the population eventually decline to extinction?

#Question id: 24572

#Unit 10. Ecological Principles

#Question id: 24573

#Unit 10. Ecological Principles