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TLS Online TPP Program

#Question id: 3869

Which one of the following statements about E. coli RNA polymerase (core enzyme) is false?

#Unit 3. Fundamental Processes

  1. It can start new chains de novo or elongate old ones.

  2. It has no catalytic activity unless the sigma factor is bound.

  3. It uses nucleoside 5'-triphosphates as substrates.

  4. Its activity is blocked by rifampicin.

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TLS Online TPP Program

#Question id: 5741

#Unit 8. Inheritance Biology

In a mammal 2 Barr bodies are observed.  How many X chromosomes does the organism have?
TLS Online TPP Program

#Question id: 5742

#Unit 8. Inheritance Biology

When an allotetraploid (AABB) is backcrossed to one of its progenitor species (AA), a sterile progeny is produced.  The genomic composition of this sterile individual can be best represented by
TLS Online TPP Program

#Question id: 5743

#Unit 8. Inheritance Biology

Euploidy is
TLS Online TPP Program

#Question id: 5744

#Unit 8. Inheritance Biology

The basic diploid chromosome number in Rye Secale cereale is 14. A new species of rye is found that has 28 chromosome species. This species is said to be
TLS Online TPP Program

#Question id: 5745

#Unit 8. Inheritance Biology

Consider a species with a diploid (2n) number of 16 chromosomes. How many chromosomes would be found in a trisomic body cell?
TLS Online TPP Program

#Question id: 5746

#Unit 8. Inheritance Biology

A base change resulting in a codon specifying an amino acid which is different than in the wild-type polypeptide