ETHC210 Exam Questions with 100% Correct Answers

ETHC210 Exam Questions with 100% Correct Answers amniocentesis (ăm′nē-ō-sĕn-tē′sĭs) - A prenatal diagnostic technique that examines fetal chromosomes and biochemicals in amniotic fluid. blastocyst (blăs′tō-sĭst′) - A fluid-filled ball of cells descended from a fertilized ovum. blastomere (blăstō′-mēr′) - A cell of a blastocyst. chorionic villus sampling (CVS) (kôrē-ŏn′ĭk vĭl-us) - A prenatal diagnostic technique that analyzes chromosomes in chorionic villus cells, which, like the fetus, descend from the fertilized ovum. cleavage (klēvĭj) - A series of rapid mitotic cell divisions after fertilization. critical period - The time during prenatal development when a structure is sensitive to damage from a mutation or an environmental intervention. crossing over - An event during prophase I when homologs exchange parts.