6. During meiosis crossing over takes place at

A. zygotene stage
B. diplotene stage
C. diakinesis stage
D. pachytene stage

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7. Which of the following transposable elements are not found in plants?

A. Ac
B. Tam3
C. L1
D. All are found

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8. A plasmid used to introduce BT toxin into a plant cell

A. carries an antibiotic resistance gene that makes the plant resistant to antibiotics
B. causes the plant to produce opines
C. is toxic for the plant cell
D. carries a bacterial gene with a plant promoter

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9. The homologous chromosomes follow the process of synopsis in the

A. leptotene
B. zygotene
C. pachytene
D. diplotene

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10. When F1 plants are crossed with homozygous recessive plants, it is known as

A. test cross
B. recessive cross
C. criss-cross
D. para-cross

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