Inglise keel unit 5 answers
F1 genotype: IiCC or IiCc; 2
(ii) 3 white : 1 pigmented or 13 white : 3 pigmented; 1
[8]
30. gene bank;
source of alleles;
for future (selective) breeding;
to counteract, genetic erosion/loss of genetic variation;
to counteract, inbreeding/homozygosity;
to counteract extinction;
for changed conditions;
example of changed conditions; e.g. climate/environment/disease/fashion
to preserve as yet unidentified, alleles/traits; max 4
[4]
31. pigmented birds more likely to be damaged;
at all percentages;
more damage as percentage of pigmented birds increases to 23%;
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