Alkire The cross-over value of 43 per cent shows that crossing-over is very free. In Horwitz, Allan V. Differences have been found in a variety of fields such as mental healthcognitive abilitiespersonalityemotionsexuality  and tendency towards aggression. There is probably no special significance in this coincidence of color, since similar dilutions to various degrees have been demonstrated for all the other eye-colors tested Morgan and Bridges, For instance, the average male Anolis sagrei was
If at some points the chromosomes break and the pieces on the same side unite and pass to the same pole of the karyokinetic spindle, the necessary condition for crossing-over will have been fulfilled. Researcher PI Rafal Klajn. September
Separating biological from environmental effects is difficult, and advocates for biological influences generally accept that social factors are also important. This can be seen in Cannabis sativaa type of hemp, which have higher photosynthesis rates in males while growing but higher rates in females once the plants become sexually mature.
When made later, the reciprocal cross of bow female by arc male gave in F 1 straight-winged females but bow males.
In the work of  Szalkai et al. Additional Genetic Analysis Using Statistics. A very extensive series of observations has been made on the character called abnormal abdomen. In some species, there is evidence of male dimorphism, but it appears to be for the purpose of distinctions of roles.
Pinnipeds are known for early differential growth and maternal investment since the only nutrients for newborn pups is the milk provided by the mother. In this way advantage was taken of the entire mass of data.