1.The genetic ratio of 9 : 3 : 3 : 1 is due to:

2.Choose the chromosome, in a human, that possesses least number of genes.

3. G.J. Mendel was a:

4.Select the incorrect match.

5.In a dihybrid cross, if you get 9:3:3:1 ratio it denotes that:

6.A monohybrid cross produced tall and dwarf pea plants in ratio of 3 : 1. Their genotypes would be:

7. Common test to find genotype of hybrid is by:

8.Which one is a test cross?

9.Matingof an organism to a double recessive in order to determine whether it is homozygous or heterozygous for a character under consideration is called:

10. Across between two tall plants resulted in offspring having few dwarf plants. What would be the genotypes of both the parents?

11. The term genetics was proposed by:

12. TheF2 genotypic ratio of monohybrid cross is:

13. A dihybrid for qualitative trait is crossed with homozygous recessive individual of its type, the phenotype ratio is:

14. In order to find out the different types of gametes produced by a pea plant having genotype AaBb, it should be crossed with a plant with the genotype:

15. The autosomal disorder/disease in humans is :

16. Distance between the genes and percentage of recombination shows:

17.In Mirabilis jalapa, the number of F2 red flowered plants in a cross of red flowered and white flowered would be:

18.In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seeded plant is crossed with a green-seeded plant, what ratio of yellow and green seed plants would you expect in F1 generation?

19. Which of the following is best suited for codominance?

20. In complete dominance is shown by:

21. Genotypic ratio of a monohybrid cross is:

22. Conditions of a karyotype 2n +1, 2n –1 and 2n + 2, 2n – 2 are called:

23. Which one of the following is an example of polygenic inheritance?

24.Find out the wrong statement.

25. ZZ/ ZW type of sex determination is seen in:

26. Which of the following genotypes show the heterozygous condition?

27. Tt× tt is:

28. Mother and father of a person with ‘O’ blood group have ‘A’ and ‘B’ blood group, respectively. What would be the genotype of both mother and father?

29.Why is the allele for wrinkled seed shape in garden peas considered recessive?

30.When a dihybrid cross is fit into a punnett square with 10 boxes, the maximum number of different phenotypes available are:

31.In his classic experiments on pea plants, Mendel did not use

32. Across is made between tall pea plant having green pods and dwarf pea plant having yellow pods. Tall plants in F2 generation out of 16 would be:

33. The genotype of a person with Turner’s syndrome will be :

34.In sickle cell anemia glutamic acid is replaced by valine. Which one of the following triplets codes for valine?

35. Grasshopperis an example of ......A........... type of sex determination in which the................. B ................. have only one X chromosome besides the autosomes, whereas ................. C ................. have a pair of X chromosomes.

36. In honeybees, females are ................. A ................. having.................B ................. chromosomes and males are................. C ................. having ................. D................. chromosomes.

37. .................A ................. individuals in sickle-cell anaemia appear .................B ................. but they are the ................. C ................. of the disease as there is 50% probability of transmission of mutant gene to its progeny.

38. An agent that promotes mutation is called ................. .

39. In sickle-cell anaemia, shape of RBCs under oxygen tension becomes ..................