R. Pearl.Biology and Eugenics.55
Table II.
Showing some Results of Mating together Barred Plymouth Rock Males and
Barred Plymouth Rock Females with different combinations of
Fecundity Genes. Summarized Data.
Matings.Distribution of daughters in respect to
winter egg production.
Class.Over 30.Under 30.Zero.
<? iL1L2. fi ! 12 x ?fL1L2 . Fi1i2Observed21308
(High producer)Expected22' 12957'4
Average winter egg production in each class48-85 eggs16-34 eggsO eggs
<f fLjL^• -^1^2 ^Î fLiL2 . FLti2Observed21J*164O
(High producer)Expected*9190
Average winter egg production in each class ...50-38 eggs16-69 eggs—
$ iLxL2. fixi2 x ¥ ¥ of all typesObserved5ii62!II
taken together.Expected51-4562‘511-05
Average winter egg production in each class47 "94 eggs15’34 eggs0 eggs
& fi ^L2. fiiLg x î fLxLa . Fiji,,Observed92j10347
(High producer)Expected1015101-50
Average winter egg production in each class54-19 eggs15’52 eggs0 eggs
f 1^ L*2. fiiLj x ? fLxL2 . FLji'jObservedin60
(High producer)Expected11700
Average winter egg production in each class56-47 eggs20-33 eggs—
S fliL2. fi1L2 x ?fL1i2 . FTjIjObserved29232
(Low producer)Expected27270
Average winter egg production in each class ...47 '93 eggs15'3° eggs0 eggs
S fijL2. flxL2 x ? ? of all typesObserved24314910
taken together.Expected2555146-50
Average winter egg production in each class ...53'67 eggs15'37 eggs0 eggs
S fL1L2. fi1L2 x ?fL1L2 . FijisObserved2063
(High producer)Expected21'757'250
Average winter egg production in each class ...56-90 eggs24‘17 eggs0 eggs
<?fL1L2. fLjij x ? ? of all typesObserved19160
taken together.Expected1751750
Average winter egg production in each class ...5 5'47 eggs18-31 eggs—
<rfiiL2. fijla x ¥ ¥ of all typesObserved841545
taken together.Expected10-23i454'25
Average winter egg production in each class ...60-50 eggs12-26 eggs0 eggs
* The records of \ refer to birds whose winter production record was exactly 30 eggs. Each
one of the few birds of this sort is divided between the “ Over 30” and the “ Under 30” classes.
