Final answer:
Researchers have found gender differences in characteristics such as height and emotional expression, but not in cognitive abilities or blood type, with the latter being genetically determined.
Step-by-step explanation:
Researchers have found that certain characteristics differ between genders, including height and patterns of emotional expression. Height is a biological difference with men typically being taller than women on average. Differences in emotional expression between genders have also been observed, though it is worth noting that these differences are often the result of social and cultural factors rather than biological determinism.
When it comes to cognitive abilities, studies have consistently shown that there are no statistically significant differences between the genders. Any minor differences that have been noted are often negligible and likely influenced more by socialization and cultural factors than inherent biological differences. Finally, blood type is not affected by gender, but by genetics inherited from individuals' parents.