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TLS Online TPP Program

#Question id: 4992

The existence of the phenomenon of exaptation is most closely associated with which of the following reasons that natural selection cannot fashion perfect organisms?

#XL - S Microbiology

  1. Natural selection and sexual selection can work at cross-purposes to each other.

  2. Evolution is limited by historical constraints.

  3. Adaptations are often compromises.

  4. Chance events affect the evolutionary history of populations in environments that can change unpredictably.

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TLS Online TPP Program

#Question id: 14979

#XL - S Microbiology

Which is not true of mitochondria and chloroplasts?
TLS Online TPP Program

#Question id: 50

#XL - Q Biochemistry

The enzyme fumarase catalyzes the reverse hydration of fumaric acid to l-malate, but it will not catalyze the hydration of maleic acid, the cis isomer of fumaric acid. This is an example of:
TLS Online TPP Program

#Question id: 11856

#General Aptitude

Find the least number which when divided by 5 , 7 , 11 leaves reminders 1 , 2 , 4 respectively.
TLS Online TPP Program

#Question id: 9267

#XL - S Microbiology

Three living species X, Y, and Z share a common ancestor T, as do extinct species U and V. A grouping that consists of species T, X, Y, and Z (but not U or V) makes up
TLS Online TPP Program

#Question id: 5763

#XL - R Botany

A mutation that causes a mutant phenotype only under restrictive conditions