MCQ ON GENETICS & PLANT BREEDING- PART1

MCQ ON GENETICS & PLANT BREEDING- PART1

1. The tendency of an offspring to resemble its parent is known as?

• Variation
• Heredity
• Resemblance
• Inheritance

Ans- Heredity

2. Who is known as the “Father of Genetics”?

• Morgan
• Mendel
• Watson
• Bateson

Ans- Mendel

3. Mendel described his experiments in a two-part paper entitled as

• “Experiments on Plant Hybridization”
• “Experiments on Pea Hybridization”
• “Experiments on Plant Emasculation”
• None of these

Ans- “Experiments on Plant Hybridization”

Read ...MENDEL’S LAW OF INHERITANCE

4. Mendel’s findings/works were published in the year?

• 1863
• 1864
• 1865
• 1866

Ans- 1866

5. The alternate form of a gene is called?

• Alternate type
• Recessive character
• Dominant character
• Allele

Ans- Allele

Read...DIFFERENCE BETWEEN GENE AND ALLELE

6. The genotypic ratio of a monohybrid cross is?

• 1:2:1
• 3:1
• 2:1:1
• 9:3:3:1

Ans- 1:2:1

7. The crossing of F1 to either of the parents is known as?

• Test cross
• Back cross
• F1 cross
• All of the above

Ans- Back cross

8. Which of the following statements is true regarding the “law of segregation”?

• Law of segregation is the law of purity of genes
• Alleles separate from each other during gametogenesis
• Segregation of factors is due to the segregation of chromosomes during meiosis
• All of the above

Ans- All of the above

9. Homozygosity and heterozygosity of an individual can be determined by?

• Back cross
• Self-fertilization
• Test cross
• All of the above

Ans- Test cross

10. An exception to Mendel’s law is?

• Independent assortment
• Linkage
• Dominance
• Purity of gametes

Ans- Linkage

11. The smallest unit of genetic material which produces a phenotypic effect on mutation is?

• Muton
• Gene
• Recon
• Nucleic acid

Ans- Muton

12. Mendel’s findings were rediscovered by

• Correns
• De Vries
• Tschermark
• All

Ans- All

13. Law of Dominance is also called?

• Law of uniformity of 1^st filial generation
• Dominance
• Law of purity of gametes
• None of these

Ans- Law of uniformity of 1^st filial generation

14. Alleles are

• Alternate forms of genes
• Linked genes
• Chromosomes that have crossed over
• Homologous chromosomes

Ans- Alternate forms of genes

15. When the activity of one gene is suppressed by the activity of a non-allelic gene, it is known as

• Pseudo-dominance
• Hypostasis
• Epistasis
• Incomplete dominance

Ans- Epistasis

16. Cystic fibrosis is

• Sex-linked recessive disorder
• Autosomal dominant disorder
• Autosomal recessive disorder
• Sex-linked dominant disorder

Ans- Autosomal recessive disorder

17. Cell was discovered by Robert Hooke in

• 1665
• 1765
• 1865
• 1965

Ans- 1665

Read also…CELL STRUCTURE AND FUNCTION

18. A small amount of lethal mutation is always present in the population due to

• Positive selection
• Negative selection
• Frequency-dependent selection
• Mutation-selection balance

Ans- Mutation-selection balance

Read more…. WHAT IS MUTATION- AN OVERVIEW & TYPES

19. How many phenotypes can occur in the human blood group ABO with alleles “A” “B?”

• 2
• 3
• 4

Ans- 3

20. The geometrical device that helps to find out all the possible combinations of male and female gametes is known as

• Bateson Square
• Mendel Square
• Punnett Square
• Mendel’s Cube

Ans- Punnett Square

21. Which term represents a pair of contrasting characters?

• Heterozygous
• Homozygous
• Codominant genes
• Allelomorphs

Ans- Allelomorphs

22. Gene term was coined by

• Johannsen
• Bateson
• H. Morgan
• Mendel

Ans- Johannsen

See more…
MCQ ON GENETICS- PART 2
MCQ ON GENETICS- PART 3
MCQ ON GENETICS- PART 4
Agriculture One Linear (Part-1)