However, the striking differences between the sexes point to marked sexual differences in behavioural changes in later life.
Measurement of gland areas on sampled sections revealed a marked sexual dimorphism in their sizes, but no difference was detected between transgenic and wild type animals (Figure 3E).
Despite marked sexual dimorphism, the direction of the sex differences for state 3 and state 4 respiration rates was not affected by the genotype in our sample, as indicated by the absence of significant line-by-sex interactions (Table 1).
One cause of this variation may be differences in male competitive regimes: some species show marked sexual dimorphism and reproductive skew, with males fighting for dominance, while others show low dimorphism and skew, with males queuing for dominance.
The human aging process is associated with marked sexual dimorphism in the incidences of neurological and vascular diseases, but the reasons for these sex differences in disease are unclear [ 1].
Like other fairywrens, this species displays marked sexual dimorphism.
In addition to headache contributing to less sexual activity or sexual activity causing headaches [ 5], some headache sufferers have reported marked sexual arousal during a migraine attack [ 6].
"The findings that sexual difference in voice pitch are marked in humans compared with other primates is therefore a surprise," he added.
He was also interested in another preoccupation of psychologists: sex, sexual difference, and sexual adjustment.
All the other elements of marriage – sexual exclusivity, sexual difference, lifelong commitment, cohabitation – support that environment.
