If you want to analyze this data for evidence of linkage between sn and car, what is the null hypothesis?
In Drosophila, singed bristles (sn) and carnation eyes (car) are both caused by recessive X-linked alleles. The wild-type alleles (sn+ and car+) are responsible for straight bristles and red eyes, respectively. A sn car female is mated to a sn+car+ male and the F1 progeny are interbred. The F2 are distributed as follows:
A) Genes sn and car are linked.
B) Genes sn and car are not linked.
C) Genes sn and car are located close together on the same chromosome.
D) Crossing-over sometimes occurs between sn and car.
B) Genes sn and car are not linked.
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