Genetics II Genetics II 1 / 10 In population genetics, what does the Hardy-Weinberg equilibrium describe? The tendency of alleles to remain unchanged over generations The presence of genetic drift in small populations The absence of mutation and migration in a population The equilibrium frequencies of alleles in a population that is not evolving 2 / 10 Which type of mutation results in a change that alters the amino acid sequence of a protein? Silent mutation Nonsense mutation Missense mutation Frameshift mutation 3 / 10 What is the term for a DNA sequence variation that occurs when a single nucleotide in the genome is altered? Insertion Deletion Substitution Translocation 4 / 10 Which term describes a phenomenon where alleles at two or more loci segregate independently of each other during gamete formation? Linkage Epistasis Crossing over Independent assortment 5 / 10 In a pedigree chart, what does a filled-in square represent for a male individual? Carrier of a genetic disorder Affected by a genetic disorder Homozygous for a particular trait Heterozygous for a particular trait 6 / 10 What technique allows scientists to amplify specific regions of DNA for analysis? Polymerase chain reaction (PCR) Gel electrophoresis Southern blotting DNA sequencing 7 / 10 Which of the following accurately describes a restriction enzyme? An enzyme involved in DNA replication An enzyme that adds nucleotides to a growing DNA strand An enzyme that cuts DNA at specific recognition sequences An enzyme that repairs damaged DNA strands 8 / 10 In humans, which chromosomal abnormality results in the presence of an additional copy of chromosome 21? Turner syndrome Down syndrome Klinefelter syndrome Edwards syndrome 9 / 10 What term describes the phenomenon where one gene influences the expression of another gene? Codominance Epistasis Pleiotropy Linkage 10 / 10 Which of the following phenomena challenges Mendelian genetics by showing inheritance patterns influenced by multiple genes and environmental factors? Incomplete dominance Codominance Polygenic inheritance Epistasis Your score isThe average score is 0% 0% Restart quiz
