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प्रश्न
Which type of selection explains industrial melanism observed in moth, Biston bitularia?
पर्याय
Stabilising
Directional
Disruptive
Artificial
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उत्तर
Which type of selection explains industrial melanism observed in moth, Biston bitularia directional.
Explanation:
During industrial pollution, dark-colored (melanic) moths had a selective advantage due to camouflage on soot-darkened trees, leading to an increase in their population. This directional change in phenotype frequency towards the darker form illustrates directional selection responding to environmental changes caused by industrialization.
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संबंधित प्रश्न
What does the following equation represent? Explain:
p2 + 2pq + q2 = 1.
p2 + 2pq + q2 = 1. Explain this algebraic equation on the basis of Hardy Weinberg's principle.
Differentiate between Directional natural selection and Disruptive natural selection.
Multiple choice question.
In Hardy - Weinberg equation, the frequency of homozygous recessive individual is represented by:
Very short answer question.
State the Hardy – Weinberg equilibrium.
A population will not exist in Hardly Weiberg equilibrium if ____________.
In the Hardy-Weinberg equilibrium equation, the homozygous mutant is represented as ______.
(p + q)2 = p2 + 2pq + q2 = 1 represents an equation used in ______.
Hardy Weinberg's principle explains ______
Hardy - Weinberg equilibrium is known to be affected by gene - flow, genetic drift, mutation, genetic recombination and
The factor that leads to the Founder effect in a population is ______
State and explain any three factors affecting allele frequency in populations.
Name the law that states that the sum of allelic frequencies in a population remains constant. What are the five factors that influence these values?
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?
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:
The number of homozygous recessive fruit flies.
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 carrier fruit flies.
What does the Hardy-Weinberg equation \[p^2 + 2pq + q^2 = 1\] represent?
What is the role of natural selection in affecting Hardy-Weinberg equilibrium?
What does genetic drift cause in a population, particularly in new samples of a population?
What does it indicate when the measured frequency of an allele differs from the expected Hardy-Weinberg value?
