A female fly, full of fertilized eggs, is swept by high winds to an island far out to sea. She is the first fly to arrive on this island, and the only fly to arrive in this way. Thousands of years later, her numerous offspring occupy the island, but none of them resembles her. There are, instead, several species each of which eats only a certain type of food. None of the species can fly, for their flight wings are absent, and their balancing organs (i.e., halteres) are now used in courtship displays. The male members of each species bear modified halteres that are unique in appearance to their species. Females bear vestigial halteres. The ranges of all of the daughter species overlap. If these fly species lost the ability to fly independently of each other as a result of separate mutation events in each lineage, then the flightless condition in these species could be an example of

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#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?

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#Question id: 15384

#Unit 8. Inheritance Biology

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

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#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?

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#Question id: 5263

#Unit 8. Inheritance Biology

Drug-resistance plasmids could be transferred in A. baumannii by which of the following mechanisms:

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#Question id: 15670

#Unit 8. Inheritance Biology

A researcher would like to map the location of galE and trpA genes in a new species of bacterium that appears to be closely related to E. coli. He decides to use cotransduction, and generates appropriate donor and recipient strains. He is disappointed when cotransduction is not seen in his experiement. What is the most reasonable explanation for this situation?