TLS Online TPP Program

#Question id: 4139


Which one of the following statements about the elongation phase of protein synthesis is true?

#Unit 3. Fundamental Processes
  1. At least five high-energy phosphoryl groups are expended for each peptide bond formed.

  2. During elongation, incoming aminoacylated tRNAs are first bound in the P site.

  3. Elongation factor EF-Tu facilitates translocation.

  4. Peptidyl transferase is a ribozyme.

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TLS Online TPP Program

#Question id: 5351

#Unit 8. Inheritance Biology

Consider the accompanying pedigree of a rare autosomal recessive disease, PKU. (Assume individual coming from outside that is homozygous for normal allele) What is the probability of child showing trait of A and B individuals?

TLS Online TPP Program

#Question id: 5350

#Unit 8. Inheritance Biology

Which of the following most probable mode of genetic disorder?

TLS Online TPP Program

#Question id: 5349

#Unit 8. Inheritance Biology

The following is the inheritance pattern of a trait under observation:

(i) The trait often follow cris cross inheritance 

(iii) Unaffected father born to affected daughter

The trait is likely to be

TLS Online TPP Program

#Question id: 5348

#Unit 8. Inheritance Biology

Miniature wings (Xm) in Drosophila result from an X-linked allele that is recessive to the allele for long wings (XL). Following different cross with resulting progeny were possible

Male parent

Female parent

Heterozygous

Male offspring

Female offspring

Long wings

XLY

Long wing

XL Xm

       A

B

Miniature wings

XmY

Long wing

XL Xm

C

D

Which of the following above offspring is not possible to carry miniature wings?

TLS Online TPP Program

#Question id: 5239

#Unit 8. Inheritance Biology

Which of the following statements is not true for Hfr strains of E. coli ?

TLS Online TPP Program

#Question id: 5240

#Unit 8. Inheritance Biology

If bacteria grow in the presence of a large amount of DNase, which of the following recombination process completely inhibited?