6.Evolution
normal

Which of the following amino acids was not found to be synthesized in Millers’s experiment ?

A

Alanine

B

Glycine

C

Aspartic acid

D

Glutamic acid

(AIPMT-2006)

Solution

(d) : Stanley Miller in $1953$, who was then a graduate student of Harold Urey at the University of Chicago, circulated four gases ­ methane, ammonia, hydrogen and water vapour in an air tight apparatus and passed electrical discharges from electrodes. He passed the mixture through a condenser. He circulated the gases continuously in this way for one week and then analysed the chemical composition of the liquid inside the apparatus. He found a large number of simple organic compounds including some amino acid such as alanine, glycine and aspartic acid. Glutamic acid was not found.

Standard 12
Biology

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