BIO 100 Unit 6 Pre-Test _ 2020 – Troy | BIO 100 Unit 6 Pre-Test

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BIO 100 Unit 6 Pre-Test _ 2020 – Troy University Which of the following is when DNA is replicated into two copies? • DNA polymerase • Semiconservative replication • Base-pair substitut... ion • Gene mutation CONCEPT DNA Replication 2 What is the name of a segment of DNA that codes a specific protein? • Gene • Autosome • RNA • Chromosome CONCEPT Structure of DNA and Chromosomes 3Gregor Mendel is important because his work with pea plants led to the discovery that ___________. • offspring inherit traits from their parents • some traits cannot be passed on from parent to offspring • some chromosomes are autosomes and some are sex chromosomes • traits are passed on from parents to offspring through genes CONCEPT Heredity 4 Maxine has blue eyes, which is a recessive trait. Which of the following statements about Maxine's parents must be true? • Both of Maxine's parents carry the allele for blue eyes. • Both of Maxine's parents must have blue eyes. • At least one of Maxine's parents must have blue eyes. • At least one of Maxine's parents must carry the trait for blue eyes. CONCEPT Punnett Squares 5 Which is true of X-linked recessive traits? • Males are at a higher risk of inheriting them because they only have one X chromosome.• Males can inherit their X-linked genes from either their father or their mother. • Males can only pass X-linked genes to their sons. • Females are at a higher risk of inheriting them because they have two X chromosomes. CONCEPT X-Linked Traits 6 Which of the following statements about pleiotropy is true? • It is the inheritance pattern of a gene. • It is a single gene that affects many different traits. • It is a gene locus that is affected by the expression of other genes. • It is an X-chromosome that is inactive in some tissues. CONCEPT Polygenic Traits and Pleiotropy 7 Which process involves the growth of cells in a lab and their exposure to DNA containing the desired gene? • Transfection • Transcription • Translation• Transformation CONCEPT DNA Technology and Research 8 How many chromosomes are in a sperm cell? • 46 • 23 • 22 • 44 CONCEPT Meiosis and Genetic Variability 9 If parents only produce offspring with dominant traits, which of the following is true? • One parent is heterozygous and the other is homozygous recessive. • Both parents are heterozygous. • At least one parent is homozygous dominant. • Both parents are homozygous recessive. CONCEPT Punnett Squares10 How many steps are in the translation process? • 3 • 5 • 6 • 4 CONCEPT Protein Synthesis, Part 2: Translation 11 Which of the following phases is part of mitosis? • S phase • Interphase • G1 phase • Telophase CONCEPT Mitosis 12 Which of these is true for PCR? • It is used to copy DNA rapidly. •It is used to extract DNA from cells. • It is used to replace genes in DNA. • It is used to insert DNA into bacteria. CONCEPT DNA Technology and Research 13 A father has the autosomal recessive disorder PKU. It has been confirmed that his wife is heterozygous for the disorder. Which of the following represent the genotypes of the parents? • bb, Bb • Bb, BB • Bb, Bb • bb, bb CONCEPT Autosomal Recessive Traits and Disorders 14 Which of these chromosome abnormalities involves the exchange of part of one chromosome with another nonhomologous chromosome? • Chromosome duplication • Chromosome inversion •Chromosome deletion • Chromosome translocation CONCEPT Chromosome Structure Changes 15 In which phase of mitosis are sister chromatids pulled apart? • Anaphase • Prophase • Metaphase • Telophase CONCEPT Mitosis [Show More]

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