Hardy-Weinberg: Population Lab
Data & Rubric
Lab #8
(Chapter 23)
Period 0-Data Collected (Part I)
% Tongue Rollers
% Non-Rollers
(p2 + 2pq)
(q2)
Allele
Frequency
(HW)
p
q
Class
Population
0.77
0.23
0.52
0.48
North
American
population
0.55
55%
0.45
45%
0.33
0.67
Period 1-Data Collected (Part I)
% Tongue Rollers
% Non-Rollers
(p2 + 2pq)
(q2)
Allele
Frequency
(HW)
p
q
Class
Population
0.8
0.20
0.55
0.45
North
American
population
0.55
55%
0.45
45%
0.33
0.67
Period 2-Data Collected (Part I)
% Tongue Rollers
% Non-Rollers
(p2 + 2pq)
(q2)
Allele
Frequency
(HW)
p
q
Class
Population
0.8
0.20
0.55
0.45
North
American
population
0.55
55%
0.45
45%
0.33
0.67
Part I: Answers
• Class values will vary
• North American Population:
q2 = 0.45
q = 0.67
p = 0.33
p2 = 0.108
2pq = 0.44
** Therefore 44% of the N. American Population are
heterozygous
Period 0-Data Collected (Part II)
Class Totals for each Genotype
Generation
Offspring’s Genotype
(AA, Aa, or aa)
AA
Aa
aa
1
4
24
7
2
12
13
10
3
5
22
8
4
11
16
8
5
6
25
4
Period 1-Data Collected (Part II)
Class Totals for each Genotype
Generation
Offspring’s Genotype
(AA, Aa, or aa)
AA
Aa
aa
1
10
16
9
2
6
19
10
3
5
20
10
4
8
16
11
5
11
13
11
Period 2-Data Collected (Part II)
Class Totals for each Genotype
Generation
Offspring’s Genotype
(AA, Aa, or aa)
AA
Aa
aa
1
12
14
9
2
8
20
7
3
7
19
9
4
8
15
12
5
7
17
11
Period 0-Data Collected (Part III)
Generation
Offspring’s Genotype
(AA or Aa)
Class Totals for
each Genotype
AA
Aa
1
17
18
2
24
11
3
28
7
4
28
7
5
29
6
Period 1-Data Collected (Part III)
Generation
Offspring’s Genotype
(AA or Aa)
Class Totals for
each Genotype
AA
Aa
1
16
19
2
18
17
3
22
13
4
21
14
5
27
8
Period 2-Data Collected (Part III)
Generation
Offspring’s Genotype
(AA or Aa)
Class Totals for
each Genotype
AA
Aa
1
12
23
2
19
16
3
21
14
4
23
12
5
24
11
Grading Rubric for Lab #8
• Pg. 69 Table
-Quest. #1 & 2
• Pg. 71 Table
1 pt
1 pt
1 pt
– #1 Calc. AA, Aa, aa
1 pt
– Initial frequencies: AA: 0.25, Aa: 0.50, aa: 0.25 1 pt
– Recording the finding from #1
1 pt
• Pg. 72 Calc Allele frequencies
• Pg. 73 Table & Calc. of Alleles
2 pts
2 pts
Topics for Discussion #1-3
1. The p values tended to increase while the q values
decreased. (2 pts) Pg. 73 total: 4 pts
2. The p values would continue to go up and the q
values would continue to go down. (1 pt)
3. When comparing Part II (8B) with Part III (8C)
there was a 14% frequency change from the initial
frequency of 0.5 for p & q while in part III (8C)
there was a 32% frequency change. A much
greater change was observed when there was
selection against the “a” allele. (2 pts)
TOTAL for Pg. 74: (3 pts)
Hardy Weinberg Problems #1-6 (pg. 96-97)
1.
Homozygous dominant:
160 indiv.
Heterozygous
480 indiv.
2. Homozygous dominant:
125 indiv.
Heterozygous:
250 indiv.
3. Homozygous dominant:
90 indiv.
Heterozygous
420 indiv.
Homozygous recessive
490 indiv.
4. Homozygous dominant:
720 indiv.
Heterozygous
960 indiv.
Homozygous recessive
320 indiv.
5. Homozygous dominant: 640 indiv.
Heterozygous
320 indiv.
Homozygous recessive 40 indiv
6. Dominant allele (p) = 0.7
Showing work:
TOTAL:
2pts
2pts
3pts
3pts
3pts
1 pt
3pts
17 pts
Add the Total points for the Entire Lab
•
•
•
•
•
•
•
Pg. 69
Pg. 71
Pg. 72
Pg. 73
Pg. 74
Pg. 96
Pg. 97
3 pts
4 pts
2 pts
4 pts
3 pts
4 pts
13 pts
TOTAL POINTS FOR LAB:
33 pts