Gentics And Evoloution - Study Mode

[#71] The free OH group of the 3' - OH end of one Okazaki fragment and the phosphate group at the 5' end of another are joined by mediation of the enzyme
Correct Answer

(D) DNA ligase

[#72] When Nicotiana tabacum is crossed with Nicotiana sylvestris the hybrids produced possess
Correct Answer

(C) 12 trivalents and 12 univalents

[#73] Which one of the following is a hereditary disease?
Correct Answer

(B) Haemophilia

[#74] The phenomenon by which different organisms that are not very closely related have developed similar adaptations for life in similar habitats is known as
Correct Answer

(A) Convergent evolution

[#75] Which of the following initiates transcription of mRNA on the DNA template?
Correct Answer

(A) Sigma factor (σ)