Question
What does the following equation represent? Explain.
$p^2+ 2 pq + q^2 = 1$
$p^2+ 2 pq + q^2 = 1$
✓
Answer
Hardy Weinberg's Principle/allele frequencies in a population are stable and is constant from generation to generation,/represents stable allelic frequency in a population indicating no evolution occurring, $p^2$ frequency of homozygous dominant/AA, $2\ pq$ frequency of heterozygous/Aa.$q^2$ frequency of homozygous recessive/aa.
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
Why are lymph nodes and bone marrow called lymphoid organs? Explain the functions of each of them.
In cattle, hornless (H) is dominant over horned (h) and black (B) is dominant over red (b). Consider that these two pairs of genes assort independently.
- What proportion of the offspring from the cross, BbHh x bbhh, would be black and hornless?
- From the cross Bbhh x Bbhh, how many will be:
- Black and horned.
- Red and horned.
Given below is the representation of amino acid composition of the relevant translated portion of B-chain of haemoglobin, related to the shape of human red blood cells.
- Is this representation indicating a normal human or a sufferer from certain related genetic disease? Give reason in support of your answer.
- What difference would be noticed in the phenotype of the normal and the sufferer related to this gene?
- Who are likely to suffer more from the defect related to the gene representedthe males, the females or both males and females equally? And why?
You might have been seen in TV or read in newspapers about bird flu. This has created a fear in the country and had drastically affected egg and chicken consumption. Find out more about this and discuss whether the panic reaction was justified.
Recombinant DNA-technology is of great importance in the field of medicine. With the help of a flow chart, show how this technology has been used in preparing genetically engineered human insulins.
- Name the organic material exine of the pollen grain is made up of. How is this material advantageous to pollen grain?
- Still it is observed that it does not form a continuous layer around the pollen grain. Give reason.
- How are 'pollen banks' useful?
(i) Explain the following:
(a) Leaching
(b) Humification and mineralisation
(ii) What is humus?
(a) Leaching
(b) Humification and mineralisation
(ii) What is humus?
Why greenhouse gases are increasing in their proportion?
Many secondary metabolites of plants have medicinal properties. It is their misuse that creates problems. Justify the statement with an example.
Fertilisation is essential for production of seed, but in some angiosperms, seeds develop without fertilisation.
Give an example of an angiosperm that produces seeds without fertilisation. Name the process.
Give an example of an angiosperm that produces seeds without fertilisation. Name the process.