+----------+--------------------+--------------------+ | | s r | s f | | | ---+- | -+--+- | | | f | r | | +------------+-------+-------+------------+ |Reference.| Sable |Forked.|Sable |Rudimentary.| | |rudimentary.| |forked.| | | | | | | | +----------+------------+-------+-------+------------+ ~ 264 | 1 | 1 | .. | .. | ~ 265 | .. | .. | .. | .. | | 266 | .. | 2 | .. | .. | +----------+------------+-------+-------+------------+ |Total | 1 | 3 | .. | .. | +----------+------------+-------+-------+------------+ There were 265 males, of which 42 were cross-overs between sable and rudimentary and 4 between rudimentary and forked. The values found are: sable rudimentary, 16; rudimentary forked, 1.5; sable forked, 17. LINKAGE OF RUDIMENTARY, FORKED, AND BAR. The three gens, rudimentary, forked, and bar, form a very compact group. A rudimentary forked male was crossed to bar females and the daughters (bar) were back-crossed singly to rudimentary forked males, the results being shown in table 45. TABLE 45.--_P_1 rudimentary forked_ [male] x _bar_ [female]. _B.C. F_1 bar_ [female] x _rudimentary forked_ [male] [male]. +----------+---------------+---------------+-------------+--------------+ | | r f | r B' | r f B' | r | | | ------ | -+---- | ----+- | -+--+- | | | B' | f | | f B' | | +---------+-----+-------+-------+-------+-----+-------+------+ |Reference.| Rudim- | Bar.| Rudim-|Forked.| Rudim-|Wild-| Rudim-|Forked| | | entary | | entary| | entary|type.| entary| bar. | | | forked. | | bar. | | forked| | | | | | | | | | bar. | | | | +----------+---------+-----+-------+-------+-------+-----+-------+------+ |267 | 56 | 104 | .. | 2 | 1 | 1 | .. | .. | |268 | 82 | 86 | 1 | 2 | .. | .. | .. | .. | |269 | 68 | 101 | .. | .. | .. | 1 | .. | .. | +----------+---------+-----+-------+-------+-------+-----+-------+------+ |Total | 206 | 291 | 1 | 4 | 1 | 2 | .. | .. | +----------+---------+-----+-------+-------+-------+-----+-------+------+ The cross-over values are: rudimentary forked, 1; forked bar, 0.6; rudimentary bar, 1.6. The order of factors is rudimentary, forked, bar. On the basis of the total data the locus of forked is at 56.5. {62} SHIFTED.