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TLS Online TPP Program

#Question id: 4165

Which is true about proofreading activity during the synthesis of aminoacyl-tRNAs?

#SCPH06 I Botany

  1. Proofreading is accomplished as an amino acid enters the active site of the enzyme. Incorrect amino acids are rejected before any reaction occurs.

  2. Proofreading occurs just after aminoacyl-adenylate formation.

  3. A separate cytosolic proofreading enzyme catalyzes the hydrolysis of incorrect aminoacyl-tRNAs.

  4. No proofreading activity is necessary due to the high level of specificity of all aminoacyl-tRNA synthetases.

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TLS Online TPP Program

#Question id: 4722

#SCPH28 | Zoology

Penetrance is the percentage of individuals having a particular genotype, who express the associated phenotype, following statement, are correct about Penetrance.
TLS Online TPP Program

#Question id: 4723

#SCPH01 Biochemistry

The most common cause of the pleiotropic effect of gene is due to
TLS Online TPP Program

#Question id: 4723

#SCPH06 I Botany

The most common cause of the pleiotropic effect of gene is due to
TLS Online TPP Program

#Question id: 4723

#SCPH12 I Genetics

The most common cause of the pleiotropic effect of gene is due to
TLS Online TPP Program

#Question id: 4723

#SCPH28 | Zoology

The most common cause of the pleiotropic effect of gene is due to
TLS Online TPP Program

#Question id: 4724

#SCPH01 Biochemistry

Which of the following are true about crossing over ?