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TLS Online TPP Program

#Question id: 4335

Which of the following mutations would be most likely to have a harmful effect on an organism?

#SCPH06 I Botany

  1. a deletion of three nucleotides near the middle of a gene

  2. a single nucleotide deletion in the middle of an intron

  3. a single nucleotide deletion near the end of the coding sequence

  4. a single nucleotide insertion downstream of, and close to, the start of the coding sequence

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TLS Online TPP Program

#Question id: 8924

#SCPH28 | Zoology

Fossil evidence indicates that the following events occurred in what sequence, from earliest to most recent?
1. Protostomes invade terrestrial environments.
2. Cambrian explosion occurs.
3. Deuterostomes invade terrestrial environments.
4. Vertebrates become top predators in the seas.
TLS Online TPP Program

#Question id: 576

#SCPH01 Biochemistry

The hydrophobic cleft in globular proteins which bind substrate molecules is called the ________.
TLS Online TPP Program

#Question id: 2615

#SCPH28 | Zoology

What are the effects shown in trp operon if we fused regulatory region of lac with structural genes of trp; which one is incorrect,
TLS Online TPP Program

#Question id: 5556

#SCPH28 | Zoology

Contact of a sea urchin egg with signal molecules on sperm causes the egg to undergo a brief ________.
TLS Online TPP Program

#Question id: 3657

#SCPH06 I Botany

Mutations in excision repair genes or a translesion DNA polymerase cause: