Sophia - Human Biology - Unit 6 Milestone 6.questions with correct answers

Sophia - Human Biology - Unit 6 Milestone 6. 1 What is the pinched region called where two sister chromatids are joined together? CONCEPT Mitosis 2 A father is colorblind. What are the odds that he passes this gene to his son? CONCEPT X-Linked Traits 3 Which of the following is true for homologous chromosomes? CONCEPT Structure of DNA and Chromosomes 4 Which of the following is a gene abnormality in which two nonhomologous parts rearrange and fuse together? CONCEPT Chromosome Structure Changes 5 What is a genetic mutation? CONCEPT DNA Replication 6 Sometimes a trait can be influenced by multiple genes. What would such a trait be called? CONCEPT Polygenic Traits and Pleiotropy 7 Which of these is true about a clone? • . CONCEPT DNA Technology and Research 8 Which of these is an autosomal recessive disorder that can result in mental retardation if levels of a certain amino acid get too high? CONCEPT Autosomal Recessive Traits and Disorders 9 Mark and Michelle both have dark hair, which is a dominant trait. But their first child is blonde. Which is the most likely explanation? • . CONCEPT Punnett Squares 10 Which of the following statements is true regarding plasmids? CONCEPT DNA Technology and Research 11 Bert has blonde hair (b). Molly has brown hair (B), but her genotype is Bb, meaning she carries a recessive blonde allele. What is the likelihood of Bert and Molly's second child having brown hair? CONCEPT Punnett Squares 12 Which of these is responsible for the occurrence of disjunction? CONCEPT Meiosis and Genetic Variability 13 Which of the following is the result of mitosis? CONCEPT Mitosis 14 What is an observable characteristic? (e.g. a person's height or skin color) CONCEPT Heredity 15 Which of the following statements is FALSE? • . CONCEPT Protein Synthesis, Part 2: Translation