#Question id: 12097
#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.
Which of the following methods would be best to determine whether the phenotypic variation in Achillea lanulosa is due to genotypic variation?
#Question id: 11795
#Unit 1. Molecules and their Interaction Relevant to Biology
#Question id: 11732
#Unit 6. System Physiology – Plant
Cytokinins are defined as compounds that have biological
activities similar to those of trans-zeatin. These activities include the
ability to do the following:
a) Induce cell division in callus cells in the presence of
an auxin
b) Promote bud or root formation from callus cultures when
in the appropriate molar ratios to auxin
c) promote senescence of leaves
d) Promote expansion of dicot cotyledons
Which one of the following activities are incorrect?
#Question id: 5689
#Unit 8. Inheritance Biology
What kind of aneuploidy gamete will be generated if meiotic nondisjuction in second division (n represent haploid number of chromosome )
#Question id: 5846
#Unit 8. Inheritance Biology
The bacteriophage can lysogenize after infecting a bacterium, i.e. integrate into the host bacterial chromosome by site-specific recombination, and may reside there for many generations before an excision event regenerates the viral genome in an infective form. Which one of the following is not a component of these events?