InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
How many types of gametes may be produced by genotype `D//d : E//e : F//f`?A. 3B. 6C. 8D. 27 |
| Answer» Correct Answer - C | |
| 102. |
How many types of gentically different gametes can be produced by an animal of genotype AaBBCC?A. oneB. twoC. fourD. eight |
| Answer» Correct Answer - B | |
| 103. |
How many difference types of gametes can be produced by an organism of the genotype AaBBCc?A. 3B. 8C. 4D. 9 |
| Answer» Correct Answer - C | |
| 104. |
When a single gene influences more then one trait it is calledA. penetranceB. polyploidyC. pleiotropyD. polydactyly |
| Answer» Correct Answer - C | |
| 105. |
How many genetically different gametes can be made by an individual of genotype AaBbccDDEe?A. 5B. 10C. 8D. 32 |
| Answer» Correct Answer - C | |
| 106. |
A pea plant parent having violet coloured flowers with unknown genotype was a plant having white coloured flowers in the progeny 50% of the flowers were violet and 50% were white. The genotype constitution of the parent having violet coloured flower was:A. homozygousB. merozygousC. hemizygousD. heterozygous |
| Answer» Correct Answer - D | |
| 107. |
A recessive mutant is one which is:A. not expressedB. rarely expressedC. expressed only in heterozygous stateD. expressed only in homozygous and hemizygous state |
| Answer» Correct Answer - D | |
| 108. |
Whether an allele is dominant or recessive depends on:A. how common the allele is relative to other allelesB. whether or not it is linked to other genesC. which chromosome it is onD. none of the above |
| Answer» Correct Answer - D | |
| 109. |
Biometric gentics is connected withA. the inheritance of quantitative traitsB. the genetical radiations on the living organismsC. the effect of enviroment on genetic set up organismsD. the biochemical explanations of various genetical phenomena |
| Answer» Correct Answer - A | |
| 110. |
Snapdragon flowers can be red (RR) , pink (Rr) or white (rr). When red-flowered plants are crossed to white-flowered, the possibility of an `"F"_(2)` offspring being homozygous is:A. `1//2`B. `1//4`C. `3//4`D. `1//2` |
| Answer» Correct Answer - A | |
| 111. |
Tt mates with tt. What will be characteristic of offsprings?A. All dominantB. 25% recessiveC. 50% recessiveD. 75% recessive |
| Answer» Correct Answer - C | |
| 112. |
grain clour in wheat isdetermined by three pairs if polygenes. Following the cross AABBCC (dark colour) `xx` aabbcc (light colour), in `F_(2)` generation what proportion of the progeny likely to resemble either parentA. NoneB. HalfC. One thirdD. Less than 5 per cent |
| Answer» Correct Answer - D | |
| 113. |
Test cross is a cross between:A. hybrid `xx` recessive parentB. hybrid `xx` dominant parentC. hybrid `xx` hybrid parentD. two distantly related species |
| Answer» Correct Answer - A | |
| 114. |
To determine heterozygosity or homozygosity a plant must be crossed with:A. recessiveB. dominantC. homozygous dominantD. heterozygous dominant |
| Answer» Correct Answer - A | |
| 115. |
Heterozygosity of `F_(1)` hydrids can be determined by :A. test crossB. back crossC. reciprocal crossD. hybrid cross |
| Answer» Correct Answer - A | |
| 116. |
A dwarf pea plant was treated with gibberellic acid. It grows as a pure tall pea plant. If the treated plant is crossed with a pure tall plant, the phenotypic ratio of `"F"_(1)` is likely to:A. all tallB. 75% tall and 25% dwarfC. all dwarfD. 50% tall and 50% dwarf |
| Answer» Correct Answer - A | |
| 117. |
A tall pea plant was grown in nutrient deficient soil and remained dwarf. When it is crossed with dwarf plant then:A. All hybrid plants are tallB. 50% tall and 50% dwarfC. 75% tall and 25% dwarfD. All hybrid plants are dwarf |
| Answer» Correct Answer - A | |
| 118. |
When a tall pea plant (TT) is crossed with a dwarf plant (tt) what will be the `"F"_(2)` generation?A. All tall plantsB. All dwarf plantsC. Both tall and dwarf plants in 3 : 1 ratioD. Both tall and dwarf plants in 1 : 1 ratio |
| Answer» Correct Answer - C | |
| 119. |
If a cross is made between AA and aa, the nature of `"F"_(1)` progeny will be:A. genotypically aa, phenotypically AB. genotypically Aa, phenotypically aC. genotypically AA, phenotypically aD. genotypically Aa, phenotypically A |
| Answer» Correct Answer - D | |
| 120. |
Two pea plants were subjected cross pollination. Of the 183 plants produced in the next generation, 94 plants were found to be all and 89 plants were found to be dwarf. The genotypes of the two parental plants are likely to be:A. TT and ttB. Tt and TtC. Tt and ttD. TT and TT |
| Answer» Correct Answer - C | |
| 121. |
In Mirabillis jalapa, TT, Tt, tt determine red, pink and white colour respectively. When `"F"_(1)` hybrid got from TT and tt was crossed with TT, ratio produced is:A. All redB. 2 red : 2 pinkC. All whiteD. 2 pink : 2 white |
| Answer» Correct Answer - B | |
| 122. |
Ratio of progeny when a red coloured heterozygote is crossed with a white coloured plant in which red colour in dominant to white colour:A. `3 : 1`B. `1 : 1`C. `1 : 2 : 1`D. `9 : 3 : 3 : 1` |
| Answer» Correct Answer - B | |
| 123. |
Flower colour in Mirabilis jalapa is an example of:A. Non-Mendelian inheritanceB. Mendelian inheritanceC. Chemical inheritanceD. Both (b) and © |
| Answer» Correct Answer - A | |
| 124. |
Law of dominance-recessiveness is proved by:A. back crossB. dihybrid crossC. monohybrid crossD. incomplete dominance |
| Answer» Correct Answer - C | |
| 125. |
Mendel formulated the law of purity of gametes on the basis of:A. test crossB. back crossC. dihybrid crossD. monohybrid cross |
| Answer» Correct Answer - D | |
| 126. |
In Antirrhinium two plants with pink flowers were hybridized. The `F_(1)` plants producedred, pink and white flowers in the proportion of 1 red, 2 pink and1 white. What could be the genotype of the two plants used for hybridization. Red flower colour is determined by RR, and white rr genesA. rrrrB. RRC. rrD. Rr |
| Answer» Correct Answer - D | |
| 127. |
Which of the following is an example of hybrid vigour?A. MuleB. HorseC. DonkeyD. Neopilina |
| Answer» Correct Answer - A | |
| 128. |
Hybrid vigour is mostly due to:A. homozygosity of pure charactersB. seperiority of all the genesC. heterozugosityD. none of the above |
| Answer» Correct Answer - C | |
| 129. |
Heterosis is referred to as the phenomenon of attainment of:A. increased vigour in a hybridB. organogenesis in plantC. production of sporesD. localized over growth |
| Answer» Correct Answer - A | |
| 130. |
The phenomenon where the offspring superior than either of the parents is:A. influenceB. inheritanceC. penetranceD. heterosis (hubrid vigour) |
| Answer» Correct Answer - D | |
| 131. |
In pea, wrinkling of seeds is due to nonformation of starch because of the absence of:A. diastaseB. invertaseC. amylaseD. branching enzyme |
| Answer» Correct Answer - D | |
| 132. |
Which of the following characters selected by Mendel are recessive?A. Yellow pod colour and wrickled seedsB. Green pod colour and dwarf plantC. Dwarf plant and round seedsD. Tall plant and axial flowers |
| Answer» Correct Answer - A | |
| 133. |
Which of the following is considered as a recessive charater of Mendel?A. Green podB. Axial flowerC. Round seedD. Wrinkled seed |
| Answer» Correct Answer - D | |
| 134. |
Which of the following are dominant characters according to Mendel?A. Green coloured pod and rounded seedB. Terminal fruit and wrinkled seedC. White testa and yellow pericarpD. Dwarf plant and yellow fruit |
| Answer» Correct Answer - A | |
| 135. |
How many different kinds of gametes will be produced by a plant having the genotype AABbCC?A. TwoB. ThreeC. FourD. Nine |
| Answer» Correct Answer - A | |