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TLS Online TPP Program

#Question id: 4699

The theory of evolution is most accurately described as

#Unit 11. Evolution and Behavior

  1. an educated guess about how species originate.

  2. one possible explanation, among several scientific alternatives, about how species have come into existence.

  3. an opinion that some scientists hold about how living things change over time.

  4. an overarching explanation, supported by much evidence, for how populations change over time.

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TLS Online TPP Program

#Question id: 23693

#Unit 13. Methods in Biology

the DNA fragments making up a genomic library are generally contained in
TLS Online TPP Program

#Question id: 18906

#Unit 13. Methods in Biology

A good vector must have the following properties.
a) It should be able to replicate autonomously.
b) A vector should be ideally less than 10 kb in size
c) The vector should be easy to isolate and purify.
d)  vector should have suitable marker genes that allow easy detection and/or selection of the transformed host cells.
e) it should a multiple cloning site
TLS Online TPP Program

#Question id: 33909

#Unit 2. Cellular Organization

What is the Lk of a 5,000 bp circular duplex DNA molecule with a nick in one strand?
TLS Online TPP Program

#Question id: 1032

#Unit 4. Cell Communication and Cell Signaling

A research laboratory is investigating environmental factors that would inhibit the growth of Archaea. One question they have is if adding the antibiotic penicillin would be effective in controlling their growth. What do you think the outcome would be if they tried this?
TLS Online TPP Program

#Question id: 15744

#Unit 5. Developmental Biology

In XX gonads, germ cells are essential for the: