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TLS Online TPP Program

#Question id: 4958

What is true of the fossil record of mammalian origins?

#XL - S Microbiology

  1. It is a good example of punctuated equilibrium.

  2. It shows that mammals and birds evolved from the same kind of dinosaur.

  3. It includes transitional forms with progressively specialized teeth.

  4. It indicates that mammals and dinosaurs did not overlap in geologic time.

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TLS Online TPP Program

#Question id: 2660

#XL - T Zoology

In the lactose operon, the molecule that causes the repressor to fall off the promoter is which of the following?
TLS Online TPP Program

#Question id: 2661

#XL - T Zoology

In the histidine operon, if the codons coding for histidine were removed, which of the following would you predict would happen?
TLS Online TPP Program

#Question id: 2662

#XL - T Zoology

In the tryptophan operon, tryptophan serves as ________________.
TLS Online TPP Program

#Question id: 2663

#XL - T Zoology

A ______________ is a collection of clones that, among themselves, contain all the DNA sequences of the organism.
TLS Online TPP Program

#Question id: 2664

#XL - T Zoology

Which of the following is an example of positive gene regulation?
TLS Online TPP Program

#Question id: 2665

#XL - T Zoology

A transposon ____________.