Biochemistry I Module of the MCAT Self Prep eCourse: Lesson 8: Genetics (Pro)

Biochemistry I Module of the MCAT Self Prep eCourse: Lesson 8: Genetics (Pro) Biochemistry I Module of the MCAT Self Prep eCourse: Lesson 8: Genetics (Pro) Biochemistry I Module of the MCAT Self Prep eCourse: Lesson 8: Genetics (Pro) Lesson 8: Genetics Lesson 8: Genetics CRB Gregor Mendel is often called the Father of Modern Genetics. Which of the following are his Laws? I. Law of Segregation II. Law of Expressivity III. Law of Independent Assortment (A) I only (B) I and III only (C) II and III only (D) I, II and III (B) I and III only Mendel's First Law is the Law of Segregation, and Mendel's Second Law is the Law of Independent Assortment. CRB Which of the following is NOT one of the 4 tenets of the Law of Segregation? (A) Genes exist in alternate forms called alleles. (B) Two alleles segregate in mitosis, resulting in gametes only carrying one allele. (C) An organism has two alleles per gene, with one from each parent. (D) If the two alleles are different, one will assert dominance over the other, making the other one silent. (B) Two alleles segregate in mitosis, resulting in gametes only carrying one allele. This actually occurs in Meiosis, not Mitosis. CRB True or false? The Law of Independent Assortment states the inheritance of one gene is independent of the inheritance of another gene. True. The Law of Independent Assortment states the inheritance of one gene is independent of the inheritance of another gene. Mutations are only a serious issue if they occur on the level of: (A) DNA (B) mRNA (C) tRNA (D) Protein (A) DNA A mutation in DNA will result in ALL future proteins being mutated. DNA mutations may be inherited or they may occur spontaneously. Spontaneous mutations may result from: I. DNA replication errors. II. DNA transcription errors. III. Environmental factors. (A) I Only (B) I and II Only (C) I and III Only (D) I, II, and III (C) I and III Only Spontaneous mutations may result from: (1) DNA replication errors. (2) Completely random events. (3) Enviro