Advertisements
Advertisements
प्रश्न
Gene flow occurs through generations. and can occur across language barriers in humans. If we have a technique of measuring specific allele frequencies in different population of the world, can we not predict human migratory patterns in pre-history and history? Do you agree or disagree? Provide explanation to your answer.
Advertisements
उत्तर
Yes, I agree. Gene flow occurs through generations. By studying specific allele frequencies, we can predict the human migratory patterns in pre-history and history. Studies have used specific genes/chromosomes/ mitochondrial DNA to trace the evolutionary history and migratory patterns of humans. (The project is known as the Human Genographic Project).
APPEARS IN
संबंधित प्रश्न
What does the following equation represent? Explain:
p2 + 2pq + q2 = 1.
State Hardy-Weinberg’s principle.
Differentiate between Directional natural selection and Disruptive natural selection.
What is the Founder's effect?
Very short answer question.
State the Hardy – Weinberg equilibrium.
In a population, Hardy Weinberg equilibrium is disturbed by following factors EXCEPT ______.
In the Hardy-Weinberg equilibrium equation, the homozygous mutant is represented as ______.
(p + q)2 = p2 + 2pq + q2 = 1 represents an equation used in ______.
Which type of selection explains industrial melanism observed in moth, Biston bitularia?
In a certain population, the frequency of three genotypes is as follows:
| Genotypes: | BB | Bb | bb |
| frequency: | 22% | 62% | 16% |
What is the likely frequency of B and b alleles?
How is Hardy-Weinberg’s expression “(p2 + 2pq + q2) = 1” derived?
List any two factors that can disturb the genetic equilibrium.
The graphs below show three types of natural selection. The shaded areas marked with arrows show the individuals in the population who are not selected. The dotted vertical lines show the statistical means.
![]() |
![]() |
![]() |
| character Graph A |
character Graph B |
character Graph C |
- What names are given to the types of selection shown in graphs A, B and C?
- After the selection has operated for several generations in the above populations indicated as, Graph A, B and C, graphically illustrate the probable results.
Explain Hardy-Weinberg's principle
State Hardy Weinberg's principle.
Give a mathematical expression for Hardy Weinberg's principle.
A population of 200 fruit flies is in Hardy Weinberg equilibrium. The frequency of the allele (a) 0.4. Calculate the following:
Frequency of the allele (A).
A population of 200 fruit flies is in Hardy Weinberg equilibrium. The frequency of the allele (a) 0.4. Calculate the following:
The number of homozygous recessive fruit flies.
Which one of the following factors will not affect the Hardy-Weinberg equilibrium?



