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TLS Online TPP Program

#Question id: 5701

Cross-over suppressors are production of gametes having cross over products is lethal. Which of the following statement is incorrect?

#Unit 8. Inheritance Biology

  1. Paracentric inversion cross over product has missing of many genes

  2. In pericentric inversion cross over product has duplication and missing of many genes

  3. Single crossing over results in chromosomal aberration in cross over product

  4. The pairing and crossing over’s do not occur in inversion heterozygotes either paracentric or pericentric

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TLS Online TPP Program

#Question id: 4899

#Unit 8. Inheritance Biology

In Neurospora a cross between the genotypes 'A' and 'a' results in an ascus with ascospores of genotypes as shown below: 

Ascus Class

Ascospore

I

A

A

A

A

a

a

a

a

II

A

A

a

a

a

a

A

A
                   

 Statements A to D are events that could have occurred during meiosis.

A) Class I is results of no crossing over between the centromere and gene.

B) Class II is results of single crossing over between the centromere and gene

C) Class I shows segregation of alleles 'A' and 'a' in meiosis II

D) Class II shows segregation of alleles 'A' and 'a' in meiosis II
TLS Online TPP Program

#Question id: 677

#Unit 1. Molecules and their Interaction Relevant to Biology

A helical wheel can be used to show
TLS Online TPP Program

#Question id: 5029

#Unit 11. Evolution and Behavior

Which of the following was the least likely factor causing the Cambrian explosion?
TLS Online TPP Program

#Question id: 21394

#Unit 12. Applied Biology

Which one of the following catalyze biological reactions?
TLS Online TPP Program

#Question id: 3870

#Unit 3. Fundamental Processes

“Footprinting” or DNase protection is a technique used to identify: