Biology Reference
In-Depth Information
(a)
(b)
85
60
80
55
75
50
70
45
65
60
40
1985
1990
1995
2000
2005
1985
1990
1995
2000
2005
Fig. 15.3
Coat colour in Soay sheep. Estimated frequency of (a) dark sheep and (b) the
TRYP1
G allele
(dominant for dark colour) in a population on St Kilda, from 1985 to 2005. From Gratten
et al
. (2008).
Photograph shows individuals with both the dark and light colour morph. Photo © Arpat Ozgul.
