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TLS Online TPP Program

#Question id: 5705

The chromosome has been broken at two points, and the segment between them has been inverted. What will be affects of this inversion however, person is heterozygous this abnormality?

#Unit 8. Inheritance Biology

  1. It may change the relative lengths of the two arms of the chromosome

  2. This stretches the dicentric chromatid across the center of the nucleus, forming a structure called a dicentric bridge

  3. Two of four gametes contain recombinant chromosomes that are missing some genes however no duplication of gene; these gametes will not produce viable offspring

  4. Recombination is not reduced within a inverted region comparatively normal

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TLS Online TPP Program

#Question id: 10970

#Unit 1. Molecules and their Interaction Relevant to Biology

A mother of blood type A+ who has always been perfectly healthy just delivered her second child. The father is of blood group O−. Knowing that the child is of blood group O− (O, Rh−), what would you expect to find in this child?
TLS Online TPP Program

#Question id: 12183

#Unit 1. Molecules and their Interaction Relevant to Biology

Following statements are regarding to regulation of S phase and mitotic cyclin levels in budding yeast.
A. In late anaphase, the anaphase-promoting complex (APC/C) ubiquitinylates S phase and mitotic cyclins.
B. In late anaphase, the anaphase-promoting complex (APC/C) phosphorylates S phase and mitotic cyclins.
C. During exit from mitosis and G1, Cdh1 is dephosphorylated and active; during S phase and mitosis, Cdh1 is phosphorylated and dissociates from APC/C, and APC/C becomes inactive.
D. During exit from mitosis and G1, Cdh1 is phosphorylated and active; during S phase and mitosis, Cdh1 is dephosphorylated and dissociates from APC/C, and APC/C becomes inactive.
E. The G1/S phase CDKs, which themselves are not APC/CCdh1 substrates, phosphorylate Cdh1 at the G1–S phase transition.
F. The G1/S phase CDKs, which themselves are not APC/CCdh1 substrates, ubiquitinylates Cdh1 at the G1–S phase transition.
Which of the following combination is correct?
TLS Online TPP Program

#Question id: 18219

#Unit 1. Molecules and their Interaction Relevant to Biology

Pseudoknot loop refers to 
TLS Online TPP Program

#Question id: 2636

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following events occur when E. coli is starved for tryptophan?

I.  The ribosome translates leader peptide completely

II. Transcription reads through attenuator into trp EDCBA

III. Tryptophanyl tRNA is not formed

IV. A stem loop structure involving regions 3 and 4 is formed at attenuator site
TLS Online TPP Program

#Question id: 837

#Unit 1. Molecules and their Interaction Relevant to Biology

Increasing order of free energy in unfolded to folded conformation of the proteins, the correct order is,
TLS Online TPP Program

#Question id: 835

#Unit 1. Molecules and their Interaction Relevant to Biology

The minor clefts and gullies on the sides of the funnel that will be false energy minima, it represents,