Dizygotic twins are produced when:

two ova are fertilized by a single sperm.
one ovum is fertilized by one sperm and then splits to form two clusters.
two ova are fertilized by two different sperm at roughly the same time.
one ovum is fertilized by two sperm and then splits to form two clusters.

two ova are fertilized by two different sperm at roughly the same time.

Psychology

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Being "in love" with someone as opposed to "loving" someone seems to require the experience of

a. passion. b. intimacy and commitment, but not passion. c. commitment only. d. intimacy only.

Psychology

Using a wire coat hanger to unclog a stopped toilet or fish a hair plug out of a blocked drain demonstrates that you are not hindered by

A) functional fixedness. B) availability heuristic. C) mental sets. D) salience of surface characteristics.

Psychology