TLS Online TPP Program

#Question id: 10207


In high light, violaxanthin is converted into zeaxanthin, via the intermediate antheraxanthin by the enzyme known as

#Unit 6. System Physiology – Plant
  1. 9-cis-Epoxycarotenoid dioxygenase   
  2. zeaxanthin epoxide(ZEP)
  3. Ascorbate peroxidase        
  4. violaxanthin de-epoxidase    
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TLS Online TPP Program

#Question id: 15148

#Unit 8. Inheritance Biology

You have isolated a set of five yeast mutants that form dark red colonies instead of the usual white colonies of wild-type yeast. You cross each of the mutants to a wild-type haploid strain and obtain the results shown below;
y
you cross each haploid mutant strain to a different haploid mutant of the opposite mating type. What type of mutation shown in the above figure;

TLS Online TPP Program

#Question id: 15195

#Unit 8. Inheritance Biology

In the following pedigree shows the segregation of two different recessive traits.
Assuming that both traits are due to linked autosomal genes that are 10 cM apart, calculate the probability that the indicated child will have both recessive traits.

TLS Online TPP Program

#Question id: 15384

#Unit 8. Inheritance Biology

A trait that appears to be dominant in one sex but recessive in the other is called:

TLS Online TPP Program

#Question id: 15477

#Unit 12. Applied Biology

Why these metabolites are manufactured by microbial fermentation rather than chemical synthesis 

TLS Online TPP Program

#Question id: 15478

#Unit 12. Applied Biology

Escherichia coli preferentially utilizes glucose by preventing the uptake of lactose and switching off transcription of the lac operon. This mechanism is known as 

TLS Online TPP Program

#Question id: 15479

#Unit 12. Applied Biology

Out of the following what usually supports the fastest growth rate and is therefore considered the preferred nitrogen source for E. coli