Question
State and explain any three factors affecting allele frequency in populations.
✓
Answer
Following are the three out of five factors which affect allele frequency in populations:
- Genetic Drift: The change in the frequency of a gene variant in a population due to random sampling is called genetic drift. Genetic drift may cause a gene variant to disappear completely and result in reduced genetic variation.
- Genetic Recombination: Production of offspring with traits which differ from parents is called genetic recombination.
- Natural Selection: This theory is based on the premise that nature selects only those traits which help an organism to survive in the changed conditions. Natural selection leads to survival of the fittest. Those which are not fit to survive perish in the long run; paving the way for evolution of a new species.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Give an account of possible effects of global warming.
The following diagrams are the age pyramids of different populations. Comment on the status of these populations.
The unicellular organisms which reproduce by binary fission are considered immortal. Justify.
Answer the following questions:
Give a schematic representation of oogenesis in human female indicating the chromosomal number at each step. Mention at what stage of female life does each phase occur.
Give a schematic representation of oogenesis in human female indicating the chromosomal number at each step. Mention at what stage of female life does each phase occur.
Enumerate the points that have to be considered for successful bee-keeping.
Describe with the help of labelled diagrammatic sketches, the experiment conducted by Hershey and Chase. Write the inference drawn by them.
What are the basic requirements of $ \text{PCR}$ technique?
→DNA and RNA
What are the three types of endosperm? Describe them briefly.
The following diagrams are the age pyramids of different populations. Comment on the status of these populations.
