TLS Online TPP Program

#Question id: 4353


The cAMP receptor protein (CRP) is said to be responsible for positive regulation of the lac operon because __.

#Part-A Aptitude & General Biotechnology
  1. CRP binds cAMP

  2. CRP binds to the CAP-binding site

  3. CRP prevents binding of the repressor to the operator

  4. CRP bound to the CRP-binding site stimulates the transcription of the lac operon

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TLS Online TPP Program

#Question id: 5733

#Part-B Specialized Branches in Biotechnology

In individuals heterozygous for a chromosome inversion, the homologous chromosomes form a loop in prophase I of meiosis.

Which of the following is effect of inversion?

A. A dicentric and an acentric chromosome in meiosis I as the chiasmata gets terminated when inversion includes centromere  

B. Appearance of deletion and duplication in both the cross over products chromosomes when centromere outside of inversion region  

C. All recombinant gamete are non-viable gametes when single crossing over within inverted region; irrespective to paracentric or pericentic inversion

D. Nonviable gametes are usually produced, resulting in a depression in observed recombination frequencies.

Which of the above statements are correct?

TLS Online TPP Program

#Question id: 5735

#Part-B Specialized Branches in Biotechnology

Aneuploids may arise through nondisjunction, the failure of homologous chromosomes or sister chromatids to separate in meiosis. Following some statement are correct.

A)  Meiosis I non-disjunction leads to produce all gamete become aneuploidy

B) Meiosis II non-disjunction leads to produce half of gametes n+1 other half normal haploid

C) Meiosis I non-disjunction leads to produce half of gametes n+1 other half n-1

D) Either meiosis I or meiosis II non-disjunction leads to produce all aneuploidy gamete

TLS Online TPP Program

#Question id: 5736

#Part-B Specialized Branches in Biotechnology

Two zygote in which one A is 44+XYY and another B is 44+XXX karyotype is best described by

TLS Online TPP Program

#Question id: 5737

#Part-A Aptitude & General Biotechnology

When an organism gains one extra copy of a chromosome but not a complete haploid set, the conditions is known as

TLS Online TPP Program

#Question id: 5738

#Part-A Aptitude & General Biotechnology

It was once thought that the ____ karyotype was related to criminal disposition because it led to aggressive behavior due to excessive "maleness".

TLS Online TPP Program

#Question id: 5739

#Part-A Aptitude & General Biotechnology

Polyploid plants found in nature usually have even numbers of chromosomes because organisms having odd numbers