Please select a subject first
Advertisements
Advertisements
Where are the untranslated regions located on mRNA and why?
Concept: Translation
Explain the process of binding of ribosomal units to mRNA during protein synthesis.
Concept: Protein Synthesis
A short piece of DNA, having 20 base pairs, was analyzed to find the number of nucleotide bases in each of the polynucleotide strands. Some of the results are shown in the table.
| Number of nucleotide bases | ||||
| Adenine | Cytosine | Guanine | Thymine | |
| Strand 1 | 4 | 4 | ||
| Strand 2 | 5 | |||
How many nucleotides containing Adenine were present in strand 2?
Concept: Deoxyribonucleic Acid (DNA) >> Structure of Polynucleotide Chain
What is the smallest part of a DNA molecule that can be changed by a point mutation?
Concept: Deoxyribonucleic Acid (DNA) >> Structure of Polynucleotide Chain
- Assertion: Ribosomal RNA is synthesized in the nucleus of the cell.
- Reason: It is translated with the enzyme RNA polymerase III.
Concept: Process of Transcription in Bacteria
The image below shows the result of plating bacteria in a chromogenic medium after incorporating the gene of interest in the plasmid. Some plates had blue colonies; some plates had white colonies. A single bacterium extracted from Plate I, II, and III is shown below:
On the basis of your observations:
- Identify the plate(s) which is/are white. Give a reason.
- Identify the plate(s) which is/are blue. Give a reason.
Concept: Regulation of Gene Expression
Write the probable differences in eating habits of Homo habilis and Homo erectus.
Concept: Human Evolution
Explain co-evolution with reference to parasites and their hosts.
Concept: Adaptive Radiation
How did Darwin explain adaptive radiation ? Give another example exhibiting adaptive radiation.
Concept: Adaptive Radiation
Why are analogous structures a result of convergent evolution?
Concept: Adaptive Radiation
Cite an example where more than one adaptive radiations have occurred in an isolated geographical area. Name the type of evolution your example depicts and state why it is so named.
Concept: Adaptive Radiation
What role does an individual organism play as per Darwin's theory of natural selection?
Concept: Evolution of Life Forms - a Theory
Mention any four special adaptive evolved in parasites for their parasite mode of life.
Concept: Adaptive Radiation
Explain divergent evolution with two examples.
Concept: Evolution of Life Forms - a Theory
Answer the following question.
Write two differences between Homo erectus and Homo habilis.
Concept: Human Evolution
Write two differences between Homo erectus and Homo habilis
Concept: Human Evolution
Answer the following question.
Write the characteristics of Ramapithecus, Dryopithecus, and Neanderthal man.
Concept: Human Evolution
According to the Hardy-Weinberg principle, the allele frequency of a population remains constant. How do you interpret the change of frequency of alleles in a population?
Concept: Hardy Weinberg’s Principle
How does the Hardy-Wienberg equation explain genetic equilibrium?
Concept: Hardy Weinberg’s Principle
At a particular locus, the frequency of allele A is 0.8, and that of allele a is 0.2. What would be the frequency of heterozygotes in a random mating population at equilibrium?
Concept: Hardy Weinberg’s Principle
