Given below are few statements regarding the cytokinin signalling pathway;

a) Cytokinin inhibits the activation of a Cdc25- like phosphatase, whose role is to remove an inhibitory phosphate group from the Cdc2 kinase

b) Cytokinin oxidase irreversibly inactivates cytokinins, and it could be important in regulating or limiting cytokinin effects

c) Cytokinin signal transduction pathway is completed on multiple places such as ER, Cytosol and Nucleus

d) Elevation of endogenous cytokinin levels in transgenic Arabidopsis results in overexpression of the KNOTTED homeobox transcription factor homologs KNAT1 and STM—genes 

Which of the following combinations  from the given above statements is correct?

TLS Online TPP Program

#Question id: 4609

#Unit 11. Evolution and Behavior

Pseudogenes are ________.

TLS Online TPP Program

#Question id: 4610

#Unit 11. Evolution and Behavior

It has been observed that organisms on islands are different from, but closely related to, similar forms found on the nearest continent. This is taken as evidence that ________.

TLS Online TPP Program

#Question id: 4611

#Unit 11. Evolution and Behavior

Given what we know about evolutionary biology, we expect to find the largest number of endemic species in which of the following geological features, which have existed for at least a few million years?

TLS Online TPP Program

#Question id: 4612

#Unit 11. Evolution and Behavior

The greatest number of endemic species is expected in environments that are ________.

TLS Online TPP Program

#Question id: 4613

#Unit 11. Evolution and Behavior

The questions below refer to the following evolutionary tree, in which the horizontal axis represents time (present time is on the far right) and the vertical axis represents morphological change.  Which species is most closely related to species W?

TLS Online TPP Program

#Question id: 4614

#Unit 11. Evolution and Behavior

Which of these is the extant (that is, living) species most closely related to species X?