Differentiate between:

(a) Xenogamy and Geitonogamy

(b) Oviparous and Viviparous organisms

(c) Parthogenesis and Parthenocarpy

Do you support ‘Dope’ test being conducted on sportspersons participating in a prestigious athletic meet? Give three reasons in support of your answer.

Suggest and describe a technique through which a virus-free healthy plant can be obtained from a diseased sugarcane plant.

Explain with the help of a suitable example the inheritance of a trait where two different dominant alleles of a trait express themselves simultaneously in the progeny. Name this kind of inheritance pattern.

Draw a schematic diagram of the E. coli cloning vector pBR322 and mark the following in it:

(a) ori

(b) rop

(c) ampicillin resistance gene

(d) tetracycline resistance gene

(e) restriction site BamHI

(f) restriction site EcoRI

OR

(a) Draw schematic diagrams of segments of a vector and a foreign DNA with the sequence of nucleotides recognised by EcoRI.

(b) Draw the vector DNA segment and foreign DNA segments after the action of EcoRI and label the sticky ends produced.