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TLS Online TPP Program

#Question id: 13022

A certain species of pine tree survives only in scattered locations at elevations above 2,800 m in the western United States. To understand why this tree grows only in these specific places an ecologist should

#Unit 10. Ecological Principles
  1. Conclude that lower elevations are limiting to the survival of this species.
  2. Study the anatomy and physiology of this species.
  3. Investigate the various biotic and abiotic factors that are unique to high altitude.
  4. Analyze the soils found in the vicinity of these trees, looking for unique chemicals that may support their growth.
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TLS Online TPP Program

#Question id: 12705

#Unit 8. Inheritance Biology

In Neurospora crasssa, the mutant exhibit poky phenotype, when a female of  poky strain is crossed with a normal strain acting as a male , all progeny individuals shows poky phenotype . however, the reciprocal cross resulted in all normal progeny. These results can be explained on the basis of 
TLS Online TPP Program

#Question id: 23289

#Unit 8. Inheritance Biology

Preparation and staining techniques help to distinguish among chromosomes of similar size and shape, this staining techniques also distinguish the banding pattern of the chromosome at which stage of cell cycle?
TLS Online TPP Program

#Question id: 15543

#Unit 8. Inheritance Biology

In Benzer's intragenic mapping experiments, what event was required to allow production of infectious phage from rII mutants?
TLS Online TPP Program

#Question id: 15542

#Unit 8. Inheritance Biology

How would you expect a mutation in a gene encoding a tail fiber protein would affect the plaque phenotype of T4?
TLS Online TPP Program

#Question id: 15384

#Unit 8. Inheritance Biology

A trait that appears to be dominant in one sex but recessive in the other is called:
TLS Online TPP Program

#Question id: 15008

#Unit 8. Inheritance Biology

You have a white eyed, male fruit fly with vestigial wings and a wild type female known to be heterozygous for both traits. You know that vestigial is located on an autosome. What is the probability that a mating between these two flies will generate a female offspring with vestigial wings and white eyes?