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Genetics and Molecular Biology: Understanding Inheritance, Mutations, and Protein Synthesis

A quiz on genetics and molecular biology, covering inheritance patterns, mutations, and protein synthesis mechanisms.

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    Genetics and Molecular Biology: Understanding Inheritance, Mutations, and Protein Synthesis This quiz will earn you up to 50 points. The deadline for submission is Sunday midnight, February17! I. Multiple choice : Please circle the correct response: (0.5 pt. each=5 pts.) (1) Which of the following is characteristic of DNA replication? a. It occurs in the same manner on both strands of the double helix. b. It always produces three identical copies of DNA. c. It is prone to making frequent errors. d. It involves complementary base pairing. Answer: d. It involves complementary base pairing. (2) Which part of the theory of inheritance did Mendel establish? a. Independent assortment of alleles b. Genes are located on chromosomes c. DNA is the genetic material d. Blending inheritance Answer: a. Independent assortment of alleles (3) How is DNA different from RNA? a. RNA is protein; DNA is nucleic acid b. RNA contains ribose sugar; DNA contains deoxyribose sugar. c. Uracil takes the place of guanine in RNA. d. RNA lacks the phosphate group found in DNA. Answer: b. RNA contains ribose sugar; DNA contains deoxyribose sugar.

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    (4) Genes that are turned on or off in response to specific environmental changes are called a. Constitutive genes b. Structural genes c. Regulator genes d. operons Answer: c. Regulator genes (5) With incomplete inheritance a. Traits show either dominance or recessiveness b. Heterozygotes are phenotypic intermediates c. Phenotypic traits have a continuous nature d. Genetic counseling is useful Answer: b. Heterozygotes are phenotypic intermediates (6) Polygenic inheritance of a trait means that a. The trait is controlled by more than one gene b. Many genes are controlled by more than one trait. c. Many alleles code for a single trait d. Genes for a trait are inherited from more than one parent Answer: a. The trait is controlled by more than one gene (7) Gene regulation in eukaryotes includes all of the following levels of control except: a. Controls that affect the rate of gene transcription.

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