English
Karnataka Board PUCPUC Science 2nd PUC Class 12

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?

Advertisements
Advertisements

Question

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?

Long Answer
Advertisements

Solution

Hardy-Weinberg's principle states that the sum of allelic frequencies in a population remains constant. Five factors are known to affect Hardy-Weinberg equilibrium. These are gene migration or gene flow, genetic drift, mutation, genetic recombination and natural selection.

shaalaa.com
  Is there an error in this question or solution?
Chapter 7: Evolution - LONG ANSWER [Page 50]

APPEARS IN

NCERT Exemplar Biology Exemplar [English] Class 12
Chapter 7 Evolution
LONG ANSWER | Q 1. | Page 50

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

What does the following equation represent? Explain:

p2 + 2pq + q2 = 1.


State Hardy-Weinberg’s principle.


What is the Founder's effect?


How does the Hardy-Wienberg equation explain genetic equilibrium?


Multiple choice question.

In Hardy - Weinberg equation, the frequency of homozygous recessive individual is represented by:


Explain how mutations, natural selection and genetic drift affect Hardy Weinberg equilibrium.


(p + q)2 = p2 + 2pq + q2 = 1 represents an equation used in ______. 


State and explain any three factors affecting allele frequency in populations.


“Migration may enhance or blurr the effects of selection”. Comment.


How is Hardy-Weinberg’s expression “(p2 + 2pq + q2) = 1” derived?


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
  1. What names are given to the types of selection shown in graphs A, B and C?
  2. 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


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 is the primary statement of Hardy-Weinberg's principle?


What does it indicate when the measured frequency of an allele differs from the expected Hardy-Weinberg value?


Which condition for Hardy-Weinberg equilibrium specifically eliminates random fluctuations in allele frequency?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×