McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: All India Pre Medical Test (AIPMT) .
Chapters
| 1. |
Genotype is |
| A. | Genetic composition of many organisms. |
| B. | Genetic composition of plastids. |
| C. | Genetic composition of germ cells. |
| D. | Genetic composition of an individual. |
| E. | cessive |
| Answer» A. Genetic composition of many organisms. | |
| 2. |
Mendelism is genetics of |
| A. | Haploids |
| B. | Diploids |
| C. | Prokaryotes |
| D. | All the above |
| E. | cessive |
| Answer» D. All the above | |
| 3. |
Which technique is used by Mendel for hybridization ? |
| A. | Emasculation |
| B. | Bagging |
| C. | Protoplast fusion |
| D. | Both A & B |
| E. | cessive |
| Answer» A. Emasculation | |
| 4. |
Phenotypic ratio 3:1 proves |
| A. | Dominance |
| B. | Segregation |
| C. | Crossing over |
| D. | Independent Assortment |
| E. | cessive |
| Answer» B. Segregation | |
| 5. |
What is the ratio of homozygous plants for both dominant characters in F2 of a Dilybrid cross ? |
| A. | 1/16 |
| B. | 3/16 |
| C. | 4/16 |
| D. | 9/16 |
| E. | cessive |
| Answer» D. 9/16 | |
| 6. |
Which of the following is significance of dominance ? |
| A. | Organisms with dominant genes are more vital |
| B. | Harmful mutations are not expressed due to dominant gene |
| C. | Heterosis is due to dominant gene |
| D. | All the above |
| E. | cessive |
| Answer» B. Harmful mutations are not expressed due to dominant gene | |
| 7. |
From a single ear of corn, a farmer planted 200 kernels which produced 140 tall & 40 short plants. The genotypes of these off springs are most likely. |
| A. | TT ,tt |
| B. | TT , Tt , tt |
| C. | TT ,Tt |
| D. | Tt ,tt |
| E. | cessive |
| Answer» A. TT ,tt | |
| 8. |
A useful process for determining whether an individual is homozygous or heterozygous is |
| A. | cross - breeding |
| B. | self fertilization |
| C. | Back - crossing |
| D. | Test cross |
| E. | cessive |
| Answer» B. self fertilization | |
| 9. |
Heterozygous tall plants were crossed with dwarf plants what will be the ratio of dwarf plants in the following progency ? |
| A. | 50% |
| B. | 25 % |
| C. | 75% |
| D. | 100% |
| E. | cessive |
| Answer» A. 50% | |
| 10. |
Genetic recombinations occur through |
| A. | Mitosis & fertilization |
| B. | Mitosis & Meiosis |
| C. | Meiosis & fertilization |
| D. | None |
| E. | cessive |
| Answer» C. Meiosis & fertilization | |
| 11. |
Which of the following is the unit of inheritance ? |
| A. | Phenotype |
| B. | Genotype |
| C. | Gene |
| D. | Genome |
| E. | cessive |
| Answer» C. Gene | |
| 12. |
Allele is the |
| A. | Alternate trait of gene pair |
| B. | Total number of genes for a trait |
| C. | Total number of chromosomes |
| D. | Total number of chromosomes of a haploid set. |
| E. | cessive |
| Answer» A. Alternate trait of gene pair | |
| 13. |
Types of phenotypes of F2 generation of dihybrid cross ? |
| A. | 4 |
| B. | 16 |
| C. | 8 |
| D. | 9 |
| E. | cessive |
| Answer» A. 4 | |
| 14. |
Cross XXYy xxYy yields Xx YY:XxYy :Xxyy:xxyy offspring in the ratio of |
| A. | 0 : 3 : 1 : 1 |
| B. | 1 : 2 : 1 : 0 |
| C. | 1 : 1 : 1 : 1 |
| D. | 1 : 2 : 1 : 1 |
| E. | cessive |
| Answer» C. 1 : 1 : 1 : 1 | |
| 15. |
Genes do not occur in pairs in |
| A. | Zygote |
| B. | Somatic cell |
| C. | Endosperm cell |
| D. | Gametes |
| E. | cessive |
| Answer» D. Gametes | |
| 16. |
Genotype - Phenotype concept was first produced by |
| A. | Bateson |
| B. | Johannsen |
| C. | Sutton&Boveri |
| D. | Punnet |
| E. | cessive |
| Answer» A. Bateson | |
| 17. |
1: 1: 1: 1 ratio shows |
| A. | Monohybrid cross |
| B. | Dihybrid cross |
| C. | Back cross |
| D. | Dihybrid test cross |
| E. | cessive |
| Answer» D. Dihybrid test cross | |
| 18. |
Test cross is |
| A. | Tt Tt |
| B. | Tt TT |
| C. | TT TT |
| D. | Tt tt |
| E. | cessive |
| Answer» D. Tt tt | |
| 19. |
In a plant, gene "T" is responsible for tallness and its recessive allele "t" for dwarfness and "R" is reponsible for red colour flower and its recessive allele "r" of white flower colour. A tall and red flowered plant with genotype TtRr crossed with dwarf and red flowered ttRr. What is the percentage of dwarf - white flowered offspring of above cross ? |
| A. | 50% |
| B. | 6.25% |
| C. | 12.5 % |
| D. | 50 % |
| E. | cessive |
| Answer» C. 12.5 % | |
| 20. |
In Mirabilis plant the appearance of the pink hybrid (Rr) between cross of a red (RR) and white (rr) flower parent indicates |
| A. | Segregation |
| B. | Dominance |
| C. | Incomplete dominance |
| D. | Heterosis |
| E. | cessive |
| Answer» C. Incomplete dominance | |
| 21. |
If there were only parental combinations in F2 of a dihybrid cross then Mendel might have discovered ? |
| A. | Independent assortment |
| B. | Atavism |
| C. | Linkage |
| D. | Repulsion |
| E. | cessive |
| Answer» A. Independent assortment | |
| 22. |
Medelian dihybrid and dihybrid with linkage are respectively related with how many chromosomes? |
| A. | 1 pair & 2 pair |
| B. | 2 pair & 1 pair |
| C. | 2 pair & 2 pair |
| D. | 1 pair & 1 pair In dihybrid with linkage , 2 pairs of genes located in similar homobgous chromosomes |
| E. | cessive |
| Answer» B. 2 pair & 1 pair | |
| 23. |
If distance between gene on chromosome in more , then gene shows :- |
| A. | Less Linkag |
| B. | strong linkage |
| C. | weak linkage |
| D. | incomplete linkage |
| E. | cessive |
| Answer» B. strong linkage | |
| 24. |
Which of the following conditions represent a case of co- dominant genes ? |
| A. | A gene expresses itself , suppressing the phenotypic effect of its alleles. |
| B. | enes that are similar in phenotypic effect when present separately, but when together interact to produce a different trait. |
| C. | Alleles, both of which interact to produce effect in homozygous condition |
| D. | Alleles, both of which interact to produce an independent effect in heterozygous condition. |
| E. | cessive |
| Answer» D. Alleles, both of which interact to produce an independent effect in heterozygous condition. | |
| 25. |
A gene located an y - chromosome and therefore, transmitted from father to son is known as |
| A. | Supplementary gene |
| B. | Complementary gene |
| C. | Duplicate gene |
| D. | Holandric gene |
| E. | cessive |
| Answer» A. Supplementary gene | |
| 26. |
In multiple allele system a gamete possesses |
| A. | 2 alleles |
| B. | 3 alleles |
| C. | one allele |
| D. | several alleles |
| E. | cessive |
| Answer» C. one allele | |
| 27. |
Blood grouping in humans is controlled by |
| A. | 4 alleles in which IA is dominant |
| B. | 3 alleles in which IA and IB are dominant |
| C. | 2 alleles in which none is dominant |
| D. | 3 alleles in which IA is recessive |
| E. | cessive |
| Answer» B. 3 alleles in which IA and IB are dominant | |
| 28. |
Muliple alleles are present |
| A. | in different chromosomes |
| B. | at different loci on chromosomes |
| C. | at the same locus on homologous chromosome |
| D. | at the non homologous chromosome |
| E. | cessive |
| Answer» C. at the same locus on homologous chromosome | |
| 29. |
what is called pleiotropism ? |
| A. | Phenomenon of multiple effect of a simple gene |
| B. | Phenomenon of multiple effect of multiple genes |
| C. | Phenomenon of multiple effect of multiple alleles |
| D. | all of the above |
| E. | cessive |
| Answer» A. Phenomenon of multiple effect of a simple gene | |
| 30. |
In a family, father has a blood group 'A' and mother has a blood group 'B', Children show 50 % probability for a blood group "AB" indicate that - |
| A. | Father is heterozygous |
| B. | Mother is heterozygous |
| C. | Either of parent is heterozygous |
| D. | Mother is homozygous |
| E. | cessive |
| Answer» C. Either of parent is heterozygous | |
| 31. |
The longer the chromosome of an organism, the more genetic variability it gets from, |
| A. | Independent assortment |
| B. | Linkage |
| C. | Crossing over |
| D. | Mutation. |
| E. | cessive |
| Answer» C. Crossing over | |
| 32. |
Which statement is incorrect about linkage ? |
| A. | It helps in maintaining the valuable traits of new varieties. |
| B. | It helps in forming new recombinants. |
| C. | Knowledge of linkage helps the breeder to combine all desirable traits in a single variety. |
| D. | It helps in locating genes on chromosome. |
| E. | cessive |
| Answer» C. Knowledge of linkage helps the breeder to combine all desirable traits in a single variety. | |
| 33. |
Genetic balance theory for sex determination in Drosophila was proposed by |
| A. | Prof. R. P. Roy |
| B. | H. E. Warmbe |
| C. | C.B. Bridges |
| D. | Mc. Chang |
| E. | cessive |
| Answer» D. Mc. Chang | |
| 34. |
In Bonellia all larva are genetically and cytologically similar. In this worm mole individuals live inthe uterus of female. If a particular larva settle near proboscis of an adult female, it becomes a male individuals. Larva develops free in water it becomes. |
| A. | Male individuals |
| B. | Female individuals |
| C. | Inter Sex |
| D. | Super female |
| E. | cessive |
| Answer» B. Female individuals | |
| 35. |
F2 generation is produced as a result of |
| A. | Crossing F1 individuals with dominant parent |
| B. | Crossing F1 individuals with recessive parent |
| C. | Crossing one of the parental individual with dominant individual. |
| D. | Crossing F1 individuals amongst them selves. |
| E. | cessive |
| Answer» D. Crossing F1 individuals amongst them selves. | |
| 36. |
Segregation of genes take place during which phase of cell division ? |
| A. | Metaphase |
| B. | Anaphase |
| C. | prophase |
| D. | Embryo formation |
| E. | cessive |
| Answer» B. Anaphase | |
| 37. |
A couple has four daughters. The percentage probability of fifth child to be a Daughter is. |
| A. | 10 |
| B. | 50 |
| C. | 75 |
| D. | 100 |
| E. | cessive |
| Answer» B. 50 | |
| 38. |
In human being sex chromosomal complement is |
| A. | XX - XY |
| B. | XX - XO |
| C. | ZO - ZZ |
| D. | ZW - ZZ |
| E. | cessive |
| Answer» A. XX - XY | |
| 39. |
Zea mays has 10 pairs of chromosomes . Linkage groups present in it are |
| A. | 5 |
| B. | 10 |
| C. | 20 |
| D. | 40 |
| E. | cessive |
| Answer» B. 10 | |
| 40. |
Crossing over during meiosis occurs between |
| A. | sister chromatids |
| B. | Non sister chromatids |
| C. | Centromeres |
| D. | Non homologous chromosomes |
| E. | cessive |
| Answer» B. Non sister chromatids | |
| 41. |
Incomplete linkage in Drosophila produces off springs with parental and non-parental combinations.State the percentage of non parental combination of Drosophila. |
| A. | 83% |
| B. | 17 % |
| C. | 15 % |
| D. | 85 % |
| E. | cessive |
| Answer» B. 17 % | |
| 42. |
What does the term recombination describe ? |
| A. | Generation of non- parental gene combination |
| B. | Generation of parental gene combination |
| C. | Generation of internal gene combination |
| D. | All of the above |
| E. | cessive |
| Answer» A. Generation of non- parental gene combination | |
| 43. |
A cross between hybrid and a parent is known as |
| A. | Test cross |
| B. | Back cross |
| C. | Monohybrid cross |
| D. | Reciprocal cross |
| E. | cessive |
| Answer» B. Back cross | |
| 44. |
Checkerboard method of calculations was developed by |
| A. | Mendel |
| B. | Bateson |
| C. | punnett |
| D. | Morgan |
| E. | cessive |
| Answer» A. Mendel | |
| 45. |
Punnet square is used to know |
| A. | outcome of a cross |
| B. | probable result of a cross |
| C. | Types of gametes |
| D. | Number of gametes |
| E. | cessive |
| Answer» B. probable result of a cross | |
| 46. |
) First generation after a cross is |
| A. | First filial generation |
| B. | F1 gneratioon |
| C. | Second filial generation |
| D. | Both (A) and (B) |
| E. | cessive |
| Answer» D. Both (A) and (B) | |
| 47. |
) In humans , height shows a lot of variation . It is an example of |
| A. | Multiple alleles |
| B. | Pleiotropic inheritance |
| C. | polygenic inheritance |
| D. | False allelic inheritance |
| E. | cessive |
| Answer» C. polygenic inheritance | |
| 48. |
Meiosis produce 4 daughter cells but each daughter cell differ from one another because of |
| A. | Crossing over |
| B. | Independent assortment |
| C. | Change in chromosome number |
| D. | Both A & B |
| E. | cessive |
| Answer» D. Both A & B | |
| 49. |
In T. H. Morgan"s Experiment on Drosophilia what will be the result when F1 female flies are crossed with double recessive male files ? |
| A. | 83% parental combinations 17% Recombinations |
| B. | 41.5 % parental combinations 58.5% recombinations |
| C. | 60% parental combinations 40 % recombinations |
| D. | 90 % parental combinations 10% Recombinations |
| E. | cessive |
| Answer» A. 83% parental combinations 17% Recombinations | |
| 50. |
which cross yielded a ratio of 7:1 :1:7 ? |
| A. | Test cross (Dihybrid) - Bateson and punnet |
| B. | Test cross (Monohybrid) - Bateson and punnet |
| C. | Test cross (Dihybri |
| D. | - Carrel correns |
| E. | cessive |
| Answer» C. Test cross (Dihybri | |
Done Studing? Take A Test.
Great job completing your study session! Now it's time to put your knowledge to the test. Challenge yourself, see how much you've learned, and identify areas for improvement. Don’t worry, this is all part of the journey to mastery. Ready for the next step? Take a quiz to solidify what you've just studied.