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Table 2 Likelihood ratio tests for observed and expected morph frequencies under different models of autosomal inheritance

From: The genetic basis of discrete and quantitative colour variation in the polymorphic lizard, Ctenophorus decresii

Model of inheritance

Probability of O or Y parents being homozygous or heterozygous

Morph

Expected freq.

Observed freq.

G df = 3

P

One locus, 3 alleles

 Equal

O

18

21

13.47

0.004

 

Y

21

13

  
 

OY

14.63

12

  
 

G

4.38

12

  
 

 HWE

O

16.7

21

14.23

0.003

 

Y

23.22

13

  
 

OY

13.32

12

  
 

G

4.76

12

  
 

 Threshold

O

17.25

21

9.29

0.026

 

Y

19.75

13

  
 

OY

15.25

12

  
 

G

5.75

12

  

Two loci

 Equal

O

13.38

21

5.13

0.163

 

Y

15.63

13

  
 

OY

15.13

12

  
 

G

13.88

12

  
 

 HWE

O

12.31

21

10.76

0.013

 

Y

14.83

13

  
 

OY

21.35

12

  
 

G

9.51

12

  
 

 Threshold

O

11

21

14.42

0.002

 

Y

13.5

13

  
 

OY

23.5

12

  
 

G

10

12

  
  1. ‘Equal’ refers to equal (50:50) probability; ‘HWE’ refers to estimated allele frequencies from the population assuming Hardy-Weinberg Equilibrium; ‘Threshold’ refers to homo- or heterozygoisty assigned based on a threshold for which we used the mean proportion of throat colour (56 adult males). Bold indicates that observed frequencies do not differ significantly from those expected under that model
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BMC Ecology and Evolution

ISSN: 2730-7182

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