Please wait...
Contact Us
Contact
Need assistance? Contact us on below numbers

For Study plan details

93219 24448 / 89292 63204

10:00 AM to 7:00 PM IST all days.

For Franchisee Enquiry

81783 72169
OR

Chat with us on WhatsApp

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this number

93219 24448 / 99871 78554

Mon to Sat - 10 AM to 7 PM

Home / Doubts and Solutions/ICSE/Class 12 Science/Biology

I had asked the question day before in a population of 8000,80people can not recognize the taste of phenyl thio carb amide find out the number of homozygous tasters in a but the correct answer is 6480 how please explain me 

Asked by Sherbalatha2015 10th March 2016, 10:09 AM
Answered by Expert
Answer:

Hi,

Given is,

Population – 8000 and Non-tasters – 80

Allele for ability to taste PTC is dominant ‘T’.

Hence, tasters will be of two genotypes – Homozyogous dominant (TT) and Heterozygous dominant (Tt).

Non-tasters will have one genotype = Homozygous recessive (tt).

begin mathsize 9px style According space to space Hardy minus Weinberg space Equation comma space straight p squared space plus space 2 pq space plus space straight q squared space equals space 1 space space where comma space straight p space equals space frequency space of space homozygous space dominant space genotype space left parenthesis TT right parenthesis space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space 2 pq space equals space frequency space of space heterozygous space dominant space genotype space left parenthesis Tt right parenthesis space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space straight q space equals space frequency space of space homozygous space recessive space genotype space left parenthesis tt right parenthesis space Non minus tasters space left parenthesis tt right parenthesis space equals space straight q 2 space equals space 80 over 8000 space equals space 0.01 space space space space space space space space space space space space space space space space space space space space space space space space space space space space square root of straight q space space equals space 0.1 because straight p space plus space straight q space equals space 1 straight p space equals space 1 space minus space straight q space equals space 1 space minus space 0.1 space equals space 0.9 straight p squared space equals space 0.81 2 pq space equals space 2 space cross times space 0.9 space cross times space 0.1 space equals space 0.18 therefore space straight p squared space plus space 2 pq space plus space straight q squared space equals space 1 space space space space 0.81 space plus space 0.18 space plus space 0.1 space equals space 1 space space space space 1 space equals space 1 end style

Out of 8000, frequency of non-tasters (tt) = 0.01

frequency of homozygous tasters (TT) = 0.81

frequency of heterozygous tasters (Tt) = 0.18

0.01 of 8000 are non-tasters = 8000

0.81 of 8000 are homozygous tasters = 8000 x 0.81 = 6480

0.18 of 8000 are heterozygous tasters = 8000 x 0.18 = 1440

Answered by Expert 10th March 2016, 6:08 PM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Report an issue
Previous Question
Next Question
Your answer has been posted successfully!

Free related questions

RELATED STUDY RESOURCES :
ICSE Class-12-science QUESTION ANSWERS

Browse free questions and answers by Chapters

Trending Tags

trigonometric equations Mole concept linear equations trigonometric ratios arithmetic progression circle functions matrix operations integration equivalent resistance

Latest Questions

CBSE X Biology
What is enzyme  
Asked by Sureshgowdayd548 28th October 2020, 10:50 PM
JEE Main Mathematics
The following pseudocode is executed using the “Paragraph words” dataset. At the end of the execution, CountB captures the number of verbs with letter count less than the average letter count of verbs. But the pseudocode may have mistakes in one or more lines. Identify all such lines (if any). It is a Multiple Select Question (MSQ).  Error in Line 4  Error in Line 8  Error in Line 11  Error at Line 12  Error in Line 17  Error at Line 18  Error in Line 21 The following pseudocode is executed using the “Words” table. What will be the value of A at the end of the execution?
Asked by amaladelsingh 28th October 2020, 10:24 PM
CBSE X Biology
I want a brief clarity on Taxonomy
Asked by reenacharan2008 28th October 2020, 9:11 PM

Chat with us on WhatsApp