List of top Questions asked in UP Board XII

A colourblind father has a daughter with normal vision and the daughter marries a man with normal vision. What is the probability of her son being a carrier for colourblindness? Explain with pedigree chart.
Write the names of any two cyanobacteria responsible for nitrogen fixation.
Which type of cross is used to determine the genotype of tall pea plant? Explain.
Explain Co-extinctions.
Draw only the structure of antibody molecule.
In lac operon, 'Z' and 'Y' genes code for which enzymes? Also mention their functions.
Comment on Organic Farming.
What is the difference between false fruit and true fruit? Under which category does the apple fall and why?
Why did Mendel select pea plants for his experiments?
Sickle cell anemia is caused by substitution of Glutamic Acid by which amino acid?
How many peptide bonds does each antibody molecule have?
Which of the following condition is not maintained in a Bioreactor for optimum growth condition?
Oxalis and Commelina produce which two types of flowers? Name them.
Which bacterium did Frederick Griffith use for his research? Also mention the name of the disease caused by that bacterium.
Which part of female reproductive system is responsible for the collection of ovum after ovulation?
Write any two reasons why Mendel's theory of inheritance remained unrecognised till 1900.
Which of the following is not a characteristic of pollination by wind?
Write short notes on the following: (i) Biodiversity hotspot (ii) Biopiracy
What is double fertilization? Explain.
What are cloning vectors? Briefly explain the characteristics of cloning vectors.
Describe the process of spermatogenesis in brief. Add a note on the role of FSH and LH in spermatogenesis.
Define pollination. Briefly describe different kinds of pollination in flowering plants.
Define population. Discuss different attributes of population.
Give a detailed account of various strategies adopted for the conservation of biodiversity.
What is transcription? Briefly describe the mechanism of transcription in prokaryotes.