__________ are long strands of genetic material found in the nuclei of all cells

Your cousin Aman is a new father to identical twin daughters. He mentions that even at four weeks old he can already tell that one identical twin is left-handed while the other identical twin is right-handed

He mentions, though, that no one in his family or his wife's family is left-handed, so he is not sure how his one twin became left-handed. You explain to him that one twin might be left-handed and the other right-handed because ___ may influence handedness. a. genetics b. mimicry c. observational learning d. the fetus' experience in utero

The percentage of REM sleep is greatest in

A) preterm babies. B) full-term newborns. C) infants between 2 to 3 months. D) infants between 6 to 9 months.