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#Question id: 28516


The two-experiment performed by a scientist with a forelimb mesenchyme and seeing their results;
I-leg mesenchyme is placed directly beneath the wing AER
II-limb mesenchyme is replaced by non-limb mesenchyme beneath the AER
Conclusion of these experiment are seeing; 
a) distal hindlimb structures develop at the end of the limb
b) supernumerary structures are formed, usually toward the distal end of the limb
c) the AER regresses and limb development ceases
Select the correct result about these experiments-

#Unit 5. Developmental Biology
  1. I-b and II-c
  2. I-a and II-b
  3. I-a and II-c
  4.  I-c and II-a
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TLS Online TPP Program

#Question id: 28054

#Unit 1. Molecules and their Interaction Relevant to Biology

During the unfolding of a helix, breakage of each hydrogen bond requires about 2 kJ/mol. This implies: 

TLS Online TPP Program

#Question id: 68

#Unit 1. Molecules and their Interaction Relevant to Biology

Match the following functional groups given in column I with their respective representatives given in column II.

COLUMN I               COLUMN II

1. Anhydride               a. RCOOR

2. Ether                       b. ROCOCH3

3. Acetyl                     c. ROR

4. Amido                     d. RCOOCOR

5. Ester                        e. RCONH2

TLS Online TPP Program

#Question id: 19880

#Unit 13. Methods in Biology

Restriction enzymes are also called as

TLS Online TPP Program

#Question id: 5820

#Unit 8. Inheritance Biology

A new chemical pesticide developed for agricultural use was subjected to the Ames test. The rate of mutation seen in samples treated with the pesticide and liver extract was approximately half that of the samples treated with the liver extract alone; in samples treated with only pesticide, the mutation rate was about the same as that of untreated samples. Which of the following statements could you make about this pesticide?

TLS Online TPP Program

#Question id: 15261

#Unit 2. Cellular Organization

Lactose and neutral red dye are used in MacConkey agar. This type of media is an example of