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295 questions found · practise this subject as a set
Show 20 · 50 per page
| # | Question | Subject and topic | Difficulty |
|---|---|---|---|
| 81 | Who provided experimental verification of the chromosomal theory of inheritance using Drosophila? | Biology/Biological Studies/Biotechnology/Biochemistry Chromosomal theory and linkage |
Easy |
| 82 | Physical association of two or more genes on the same chromosome is called | Biology/Biological Studies/Biotechnology/Biochemistry Chromosomal theory and linkage |
Easy |
| 83 | Why is Drosophila a good organism for genetic studies? | Biology/Biological Studies/Biotechnology/Biochemistry Chromosomal theory and linkage |
Medium |
| 84 | Two genes show a recombination frequency of 1.3% while another pair shows 37.2%. What does this indicate? | Biology/Biological Studies/Biotechnology/Biochemistry Chromosomal theory and linkage |
Medium |
| 85 | In a test cross of a double heterozygote AaBb (A and B on the same chromosome) with aabb, 900 offspring are p… | Biology/Biological Studies/Biotechnology/Biochemistry Chromosomal theory and linkage |
Hard |
| 86 | In birds, the sex chromosome constitution of the female is | Biology/Biological Studies/Biotechnology/Biochemistry Sex determination |
Easy |
| 87 | In grasshoppers, the male has the sex chromosome constitution | Biology/Biological Studies/Biotechnology/Biochemistry Sex determination |
Easy |
| 88 | A male honey bee (drone) has how many chromosomes, and how does it form sperm? | Biology/Biological Studies/Biotechnology/Biochemistry Sex determination |
Medium |
| 89 | What is the probability that a human couple's third child will be a boy if their first two children are girls? | Biology/Biological Studies/Biotechnology/Biochemistry Sex determination |
Medium |
| 90 | In which organism does the female determine the sex of the offspring? | Biology/Biological Studies/Biotechnology/Biochemistry Sex determination |
Hard |
| 91 | Sickle-cell anaemia results from the substitution of which amino acid at the sixth position of the β-globin c… | Biology/Biological Studies/Biotechnology/Biochemistry Mutation and genetic disorders |
Easy |
| 92 | The karyotype of a person with Turner's syndrome is | Biology/Biological Studies/Biotechnology/Biochemistry Mutation and genetic disorders |
Easy |
| 93 | A woman with normal vision whose father was colour blind marries a man with normal vision. What percentage of… | Biology/Biological Studies/Biotechnology/Biochemistry Mutation and genetic disorders |
Medium |
| 94 | Why is thalassaemia described as a quantitative problem while sickle-cell anaemia is a qualitative problem? | Biology/Biological Studies/Biotechnology/Biochemistry Mutation and genetic disorders |
Medium |
| 95 | In a pedigree, two unaffected parents have an affected daughter. What is the most likely mode of inheritance? | Biology/Biological Studies/Biotechnology/Biochemistry Mutation and genetic disorders |
Hard |
| 96 | Which scientists proved that DNA is the genetic material using radioactively labelled bacteriophages? | Biology/Biological Studies/Biotechnology/Biochemistry Search for the genetic material |
Easy |
| 97 | In Griffith's experiment, which injection killed the mice? | Biology/Biological Studies/Biotechnology/Biochemistry Search for the genetic material |
Easy |
| 98 | Why was ³⁵S used to label phage protein in the Hershey–Chase experiment? | Biology/Biological Studies/Biotechnology/Biochemistry Search for the genetic material |
Medium |
| 99 | Avery, MacLeod and McCarty found that transformation was blocked by which enzyme? | Biology/Biological Studies/Biotechnology/Biochemistry Search for the genetic material |
Medium |
| 100 | Why is DNA preferred over RNA as the store of genetic information? | Biology/Biological Studies/Biotechnology/Biochemistry Search for the genetic material |
Hard |