Genetics Questions Online Test 10

Solve Genetics Questions Online Test for 11th and 12th, Bachelor Studies,competitive Examination like CSIR NET, CBSE NEET, IELTS, GRE etc .

1. To eliminate chance factor, Mendel performed

• monohybrid cross
• dihybrid cross
• reciprocal cross
• trihybrid cross

2. Mendel always started his experiment(Monohybrid and Dihybrid cross) with

• any pea plant
• a heterozygous plant
• a pure line plant
• a fresh new plant

3. Mendel carried out artificial cross by

• emasculation of selected female parent plant
• emasculation of selected male parent plant
• dusting of pollen grains from selected male plant over selected female plant
• both (A) and (C)

4. Emasculation means

• removal of stamens before anthesis
• removal of stigma before anthesis
• removal of petals before anthesis
• removal of sepals before anthesis

5. In pea flower, how many stamens are free and how many are fused?

• 1, 9
• 2, 8
• 5, 5
• 4, 6

6. F₃ generation was obtained by

• selfing F₁hybrids
• selfing F₂ hybrids
• crossing F₁ with either parent
• none of these

7. What result did Mendel obtained after monohybrid cross between tall and dwarf pea plant?

• All new plants were dwarf
• All new plants were tall
• 50% plants were dwarf and 50% plants were tall
• 75% plants were tall and 25% plants were dwarf

8. When Mendel allowed natural selfing of F₁ hybrids during monohybrid cross between pure tall and pure dwarf pea plant, he found

• all plants were tall
• all plants were dwarf
• dwarfness reappeared in some plants
• tallness reappeared in some plants

9. During monohybrid cross experiments, Mendel performed reciprocal cross by selecting

• tall plant as male and dwarf plant as female
• tall plant as female and dwarf plant as male
• both male and female plant as tall
• both male and female plant as dwarf

10. After performing reciprocal cross between tall and dwarf plants, the ratio of tall and dwarf plants obtained was

• 1:2
• 3:1
• 1:3
• 2:1

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