Which research result would provide evidence that aggression is a heritable trait?
a. Identical twins reared together are more similar in their levels of aggressiveness than identical twins rearedapart.
b. Adopted children are more similar in levels of aggressiveness to their adoptive parents than to their biologicalparents.
c. Fraternal twins are more similar in levels of aggressiveness than non-twin siblings.
d. Identical twins are more similar in levels of aggressiveness than fraternal twins.
Question 2
In a study about status (to successfully compete for mates), Vlades Griskevicius and others (2009) and Vaillancourt (2005) found that
a. women do not use aggression of any type to boost their status.
b. men are more likely to boost their status through indirect aggression.
c. women are more likely to boost their status through direct aggression.
d. men are more likely to boost their status through direct aggression
A family pedigree of a recessive trait.
Guttation, the result of root pressure.
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Stabilizing selection eliminates extreme forms of a trait