TLS Online TPP Program

#Question id: 4260


Which of the following occur(s) when the eukaryotic translational machinery encounters the TAG codon?

#Unit 3. Fundamental Processes
  1. The bound preinitiation complex stops scanning and positions the Met-tRNAiMet at this site.

  2. The termination factors recognize this codon and translation ends.

  3. This codon is recognized by the corresponding anticodon of an empty tRNA molecule that is not linked to an amino acid.

  4. This codon is not recognized by any factors that ultimately cause the translational machinery to stop.

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TLS Online TPP Program

#Question id: 4762

#Unit 8. Inheritance Biology

a semilethal allele is an example of which of the following extensions of mendelian genetics?

TLS Online TPP Program

#Question id: 4763

#Unit 8. Inheritance Biology

in a rare blood type referred to as the bombay phenotype, individuals are unable to attach the a or b antigens to their red blood cells. individuals that are homozygous recessive for gene "h" have the bombay phenotype and their blood type is type "o" regardless of their abo genotype. this is an example of what extension of mendelian inheritance?

TLS Online TPP Program

#Question id: 4764

#Unit 8. Inheritance Biology

Which of the following is the best example of overdominance?

TLS Online TPP Program

#Question id: 4765

#Unit 8. Inheritance Biology

The recessive mutant allele that causes cystic fibrosis is much more frequent in Caucasians population than in other world populations. Some scientists believe heterozygotes must have had a survival advantage during plagues such as cholera that occasionally swept through this population. What concept does this illustrate?

TLS Online TPP Program

#Question id: 4766

#Unit 8. Inheritance Biology

In soybeans, resistance to sudden death syndrome (SDS) is inherited as a dominant condition. In some cases, individuals that are not resistant to SDS (but whose parents were) can pass the trait on to their progeny. This is an example of which of the following?

TLS Online TPP Program

#Question id: 4767

#Unit 8. Inheritance Biology

Neurofibromatosis is a condition in humans which is generally inherited in a dominant fashion. Assuming this disorder is 90% penetrant, what is the chance that a single child born to a father with neurofibromatosis and a mother known not to carry the mutation will have the disorder?