TLS Online TPP Program

#Question id: 33461


Which positions in the purine ring of a purine nucleotide in DNA have the potential to form hydrogen bonds but are not involved in Watson-Crick base pairing?

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. N-3, N-7, N-9
  2. N-2, N-6, N-9
  3. N-1, N-6, N-9
  4. N-3, N-2, N-1
More Questions
TLS Online TPP Program

#Question id: 5444

#Unit 8. Inheritance Biology

Which one of the following statements is INCORRECT?

TLS Online TPP Program

#Question id: 5445

#Unit 8. Inheritance Biology

A plant height in Maize is control by 3 pair of polygene .Two varieties of maize averaging 120 and 60 inches in height, respectively, are crossed. The F1 progeny is quite uniform averaging 90 inches in height. What is percent of F2 progeny that is resemble with either 120 cm or 60 cm height?

TLS Online TPP Program

#Question id: 5446

#Unit 8. Inheritance Biology

In a plant, height is control by three quantitative trait loci.  Each dominant additive allele is contributing 5 cm height in plant. Maximum expected plant height is 50 cm. What is minimum expected height? 

TLS Online TPP Program

#Question id: 5447

#Unit 8. Inheritance Biology

Hydrangea plants of the same genotype are planted in a large flower garden. Some of the plants produce blue flowers and others pink flowers. This can be best explained by which of the following?

TLS Online TPP Program

#Question id: 5448

#Unit 8. Inheritance Biology

Plant height control by 3 pair of polygene, two varieties of maize averaging 48 and 72 inches in height, respectively, are crossed. The F1 progeny is quite uniform averaging 60 inches in height. What is number of average phenotype out of 500 F2 plants?

TLS Online TPP Program

#Question id: 5449

#Unit 8. Inheritance Biology

Most behavioral traits are affected by many different genetic influences as well as environment. The best descriptor for such traits is: