Test Bank - Human Development (Chap 2) Study Guide Rated A+

d. 100 {Ans: Michael and Matthew are identical twins. The boys share ____ percent of their genes. a. 25 b. 50 c. 75 d. 100}a. Dizygotic twins {Ans: ____ are conceived when a woman releases more than one ovum and each is fertilized by a different sperm. a. Dizygotic twins b. Conjoined twins c. Triplets d. Monozygotic twins}a. autism {Ans: Some research suggests that fragile X syndrome is strongly associated with ____. a. autism b. ADHD c. Huntington's disease d. PKU}b. Meiosis {Ans: _____ increases genetic variability and accounts for genetic uniqueness. a. Mitosis b. Meiosis c. Sexual selection d. Fertilization}b. biological sex {Ans: The 23rd pair of chromosomes specify the ______ of the individual. a. DNA b. biological sex c. intelligence d. personality}c. gametes {Ans: Sex cells produce _____. a. DNA b. chromosomes c. gametes d. the genome}b. 20,000; 25,000 {Ans: Researchers have estimated that ______ to ______ genes reside within the chromosomes and influence all genetic characteristics. a. 10,000; 15,000 b. 20,000; 25,000 c. 50,000; 70,000 d. 100,000; 200,000}d. Crawling {Ans: Which of the following traits is strongly canalized? a. Personality b. Intelligence c. Weight d. Crawling}c. Huntington's disease