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#Question id: 4985


The loss of ventral spines by modern freshwater sticklebacks is due to natural selection operating on the phenotypic affects of Pitx1 gene

#Unit 11. Evolution and Behavior
  1. duplication (gain in number).

  2. elimination (loss).

  3. mutation (change).

  4. silencing (loss of expression).

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TLS Online TPP Program

#Question id: 2090

#Unit 2. Cellular Organization

Peripheral proteins bound to the exoplasmic face of the plasma membrane can also bind to:

TLS Online TPP Program

#Question id: 12694

#Unit 8. Inheritance Biology

A panel of cell lines was created by human—mouse somatic-cell hybridization. Each line was examined for the presence of human chromosomes and for the production of an enzyme. The following results were obtained: 

On the basis of these results, which chromosome has the gene that encodes the enzyme? 

TLS Online TPP Program

#Question id: 5712

#Unit 8. Inheritance Biology

In each of the following cases, determine the consequences of a single crossover within the inverted region of a pair of homologous chromosomes with the gene order A B C D in one chromosome and a c b d in the other. There is a two situation of centromere for that gene. 

(A) Centromere is not included within the inversion.

(B) Centromere is included within the inversion

Following consequence are resulting are

I - The crossover chromatids consist of a dicentric and an acentric

II- One Cross over product is duplicated for the terminal region contain in A and deficient for the terminal region containing D

III- Both cross over products is monocentric

Following is correct combination for consequence?

TLS Online TPP Program

#Question id: 12713

#Unit 6. System Physiology – Plant

Following are certain statements related to plants water deficit condition;
a) Inhibits Leaf Abscission
b) Enhances Root Extension into Deeper, Moist Soil
c) Limits Photosynthesis within the Chloroplast
d) decreases Resistance to Liquid-Phase Water Flow
e) Increases Wax Deposition on the Leaf Surface
f) Alters Energy Dissipation from Leaves
Which of the following combination given statements is correct 

TLS Online TPP Program

#Question id: 20982

#Unit 12. Applied Biology

Which is considered as the most recalcitrant of the BTEX compounds, and of greatest regulatory concern because of its associated health impacts?