When presomitic mesoderm (PSM) that would ordinarily form thoracic somites is transplanted into a region in a younger embryo (caudal to the first somite) that would ordinarily give rise to cervical (neck) somites, the grafted mesoderm differentiates according to its original position and forms ribs in the neck. This phenomena is called as:

TLS Online TPP Program

#Question id: 987

#Unit 1. Structure and Function of Biomolecules

Which is not a direct precursor of pyrimidines in their de novo biosynthesis?

TLS Online TPP Program

#Question id: 988

#Unit 1. Structure and Function of Biomolecules

 Which is the precursor of all pyrimidine ribo- and deoxyribonucleotides?

TLS Online TPP Program

#Question id: 989

#Unit 1. Structure and Function of Biomolecules

Which catalytic site is not contained in the eukaryotic multifunctional protein dihydroorotate synthase?

TLS Online TPP Program

#Question id: 990

#Unit 1. Structure and Function of Biomolecules

Carbamoyl phosphate synthetase I is located in the ________ in eukaryotes and uses ________ as a nitrogen source.

TLS Online TPP Program

#Question id: 991

#Unit 1. Structure and Function of Biomolecules

The conversion of UTP to CTP involves ________.

TLS Online TPP Program

#Question id: 992

#Unit 1. Structure and Function of Biomolecules

Fatty acids are activated to acyl-CoAs and the acyl group is further transferred to carnitine because: