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TLS Online TPP Program

#Question id: 4608

What must be true of any organ described as vestigial?

#XL - S Microbiology

  1. It must be analogous to some feature in an ancestor.

  2. It must be homologous to some feature in an ancestor.

  3. It must be both homologous and analogous to some feature in an ancestor.

  4. It need be neither homologous nor analogous to some feature in an ancestor.

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TLS Online TPP Program

#Question id: 19681

#XL - P Chemistry

By reacting with which of the following, primary amines can be separated from secondary and tertiary amines?
TLS Online TPP Program

#Question id: 3021

#XL - S Microbiology

The lag phase of the bacterial growth curve is marked by
TLS Online TPP Program

#Question id: 11161

#XL - S Microbiology

The lakes of northern Minnesota are home to many similar species of damselflies of the genus Enallagma that have apparently undergone speciation from ancestral stock since the last glacial retreat about 10,000 years ago. Sequencing which of the following would probably be most useful in sorting out evolutionary relationships among these closely related species?
TLS Online TPP Program

#Question id: 15457

#XL - S Microbiology

Activation-Induced Cytidine Deaminase (AID), which was subsequently shown to be necessary for
TLS Online TPP Program

#Question id: 14999

#XL - T Zoology

I know that black coat color in mice is dominant to albino. Black mice get a higher price at the pet store so I am disappointed when I cross a black mouse with an albino mouse and get 6 albino and 2 black mice in the litter. I expected all black. What mistake did I make?