A chromosomal alteration in which one or more pairs of homologous chromosomes fail to separate
normally during meiotic cell division is known as... 1.)an addition
2,) crossing over
3.) nondisjunction
4.) translocation

According to piaget, children have acquired the cognitive skill of conservation when they're able to a. understand that six ounces of liquid in a jar and six ounces in an elongated tube are equal. b. understand the viewpoint of other people. c. relate objects around them to their own needs. d. realize that the term heavy describes an object one way and the term big describes it another way. it is not b nor c. did this 2 x wrong..

Which prefix mean under less or below

When an object is moving away from you while still making a sound, the pitch of the sound is perceived to a. lower b. unchanged c. fluctuating d. higher