A gain-of-function mutation in which of the following would have the same effect as a gain-of-function mutation in Ras?

#Question id: 18582

#Unit 7. System Physiology – Animal

#Question id: 12974

#Unit 10. Ecological Principles

#Question id: 12086

#Unit 10. Ecological Principles

The herbaceous plant Achillea lanulosa is widespread in the Northern Hemisphere. Phenotypic variation in the species has been extensively studied along an altitudinal gradient from sea level to over 3,000 meters. In California there is conspicuous variation in  height; alpine plants are only several centimeters tall  while  those in  the San Joaquin Valley may reach a height of 1.8 meters. Adaptation to different local environments also results in variation in physiological processes such as photosynthetic rate, resistance to cold, and the timing of dormancy.

The genetic polymorphism found in Achillea lanulosa is most likely maintained primarily by

#Question id: 10235

#Unit 10. Ecological Principles

Following some observation is correct about species of P, Q and R

A) Species P and R have generalized nich while Q has specialized nich

B) Species P and R have specialized nich while Q has generalized nich

C) Species P and R are more prone to extinct than Q species

D) Species Q is more prone to extinct than either P or R species

#Question id: 12723

#Unit 6. System Physiology – Plant