TLS Online TPP Program

#Question id: 12434


Nitrifying bacteria participate in the nitrogen cycle mainly by

#Unit 10. Ecological Principles
  1. Converting nitrogen gas to ammonia.
  2. Releasing ammonium from organic compounds, thus returning it to the soil. 
  3. Converting ammonia to nitrogen gas, which returns to the atmosphere.
  4. Converting ammonium to nitrate, which plants absorb.
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TLS Online TPP Program

#Question id: 5470

#Unit 8. Inheritance Biology

Numerous pure breeding crosses are made between two inbred plant strains, one having a mean height at maturity of 96 cm and the other as 56 cm. The height of the F1 progeny at maturity averages close to 76 cm. Height of plant control by four pair of polygene. The F2 progeny show the following phenotype.

TLS Online TPP Program

#Question id: 5471

#Unit 8. Inheritance Biology

A plant height in Maize is control by 3 pair of polygene. Two varieties of maize averaging 120 and 90 inches in height, respectively, are crossed. The F1 progeny is quite uniform averaging 105 inches in height. What will be height phenotype of F2 progenies ?

TLS Online TPP Program

#Question id: 5472

#Unit 8. Inheritance Biology

Plant height of wild Solanum nigrum is controlled by four pair of polygene. A plant genotype AaBBCcDd with 150 cm height but B plant genotype aabbccdd with 125 cm height present in their population. Following some plants with genotype AABBCCDD, AaBbCCDD, AabbccDD, aaBBccdd and their expected height in cm respectively is

TLS Online TPP Program

#Question id: 5687

#Unit 8. Inheritance Biology

The error in meiosis that produces a 47,XYY karyotype is best  described by

TLS Online TPP Program

#Question id: 5688

#Unit 8. Inheritance Biology

Which of the following are not cause of aneuploidy

TLS Online TPP Program

#Question id: 5689

#Unit 8. Inheritance Biology

What kind of aneuploidy gamete will be generated if meiotic nondisjuction in second division (n represent haploid number of chromosome )