SOPHIA PATHWAY Sophia - Human Biology - Unit 6 Milestone 6 100% Updated questions and Answers Graded A+

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Sophia___Human_Biology___Unit_6_Milestone_6 updated Questions and Answers Graded A+ Sophia - Human Biology - Unit 6 Milestone 6 1 What is the pinched region called where two sister chromatids are joi... ned together? • Centromere • Centriole • Chromosome • Centrosome CONCEPT Mitosis 2 A father is colorblind. What are the odds that he passes this gene to his son? • 100% • 25% • 0% • 50% CONCEPT X-Linked Traits 3 Which of the following is true for homologous chromosomes? • We receive two from each parent. They contain the same set of genes, and are the same length and shape. • We receive one from each parent. They contain different sets of genes, and are different lengths and shapes. • We receive one from each parent. They contain the same set of genes, and are the same length and shape. • We receive both from one parent. They contain different sets of genes, and are different lengths and shapes. CONCEPT Structure of DNA and Chromosomes 4 Which of the following is a gene abnormality in which two nonhomologous parts rearrange and fuse together? • Deletion • Translocation • Duplication • None of these CONCEPT Chromosome Structure Changes 5 What is a genetic mutation? • Change in DNA sequence • Joining of DNA molecules • Replication of DNA • Transcription of DNA CONCEPT DNA Replication 6 Sometimes a trait can be influenced by multiple genes. What would such a trait be called? • Pleiotropy • Multifactorial trait • Polygenic trait • Penetrance CONCEPT Polygenic Traits and Pleiotropy 7 Which of these is true about a clone? • It is a hybrid version of two different cell types. • It is a white blood cell infected by a virus. • It is a genetic copy of a cell. • It is a type of cancerous stem cell. 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? • Cystic fibrosis • Down syndrome • Huntington's disease • Phenylketonuria 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? • Another gene caused the alleles for brown hair to deactivate. • It's not possible--Mark can't be the real father. • One of the two has a blonde allele that is dominant in the child. • Both parents have a recessive blonde allele that got passed on to their child. CONCEPT Punnett Squares 10 Which of the following statements is true regarding plasmids? • All of the answer choices are correct. • Plasmids are circular molecules of DNA. • Plasmids may be transferred between different species of bacteria. • Plasmids are sites for inserting genes for amplification. 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? • 50% • 75% • 25% • 100% CONCEPT Punnett Squares 12 Which of these is responsible for the occurrence of disjunction? • Duplication of genetic material • Exchange of genetic material • Fusion of homologous chromosomes • Separation of homologous chromosomes CONCEPT Meiosis and Genetic Variability 13 Which of the following is the result of mitosis? • Four diploid cells that are identical to the parent cell • Two diploid daughter cells that are identical to the parent cell • Two haploid cells that are identical to the parent cell • Four haploid cells that are identical to the parent cell CONCEPT Mitosis 14 What is an observable characteristic? (e.g. a person's height or skin color) • Locus • Allele • Genotype • Phenotype CONCEPT Heredity 15 Which of the following statements is FALSE? • RNA has uracil as one of its nitrogen bases while DNA does not. • RNA has ribose sugar in its nucleotide while DNA has deoxyribose sugar. • RNA is single-stranded while DNA is double-stranded. • There are three types of DNA: mDNA, tDNA and rDNA. CONCEPT Protein Synthesis, Part 2: Translation [Show More]

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