BIOL 180 Quiz 4 2023/24 100% Correct

BIOL 180 Quiz 4 2023/24 100% CorrectBIOL 180 Quiz 4 2023/24 100% Correct Return to Assessment List Part 1 of 6 - Chapter 6 24.0 Points Question 1 of 33 3.0 Points What is the term for a cell’s complement of DNA? • A. gamete • B. nucleus • C. genome • D. chromosome Feedback: Great job. Question 2 of 33 3.0 Points In general, the cell cycle can be divided into three basic phases. What are they? • A. G1, S, G2 • B. prophase, anaphase, telophase • C. interphase, mitosis, cytokinesis • D. meiosis, mitosis, S Feedback: Great job. Question 3 of 33 3.0 Points What is the process of cell division called in prokaryotes? • A. Single mutation • B. Cytokinesis • C. Double fusion • D. Binary fission Feedback: Great job. Question 4 of 33 3.0 Points What is the major difference during cytokinesis in eukaryotes with or without a cell wall? • A. cleavage furrow in those without cell walls • B. cytokinesis does not occur in cells with a cell wall • C. cytokinesis does not occur in cells without a cell wall • D. cell plate in those without cell walls Feedback: Great job. Question 5 of 33 3.0 Points In diploid organisms, chromosomes are in a matched pair. What is the term for these chromosomes? • A. homologous • B. dissimilar • C. heterologous • D. unrelated Feedback: Great job. Question 6 of 33 3.0 Points What is the phase that not all cells enter, but is a phase where cells are not actively dividing? • A. S • B. G0 • C. G1 • D. G2 Feedback: Great job. Question 7 of 33 3.0 Points How is it possible that a person can have blood type AA, BO or AB, for example? • A. there are two alleles, and a person gets all three, but only expresses two • B. there are three alleles, but a person only has two alleles • C. there are two alleles, but a person only has one allele • D. there are three alleles, and a person expresses all three copies Feedback: Great job. Question 8 of 33 3.0 Points What is the purpose of checkpoints in the cell cycle? • A. to keep any foreign DNA out of the cell • B. to make the division move faster • C. to maintain protein health in the cell • D. to ensure detrimental mutations are not passed on Feedback: Great job. Part 2 of 6 - Chapter 7 24.0 Points Question 9 of 33 3.0 Points Tortoise shell cats have variegated coat colors caused by X inactivation and are always what? • A. heterozygous females • B. homozygous females • C. heterozygous males • D. homozygous males Feedback: Great job. Question 10 of 33 3.0 Points What is NOT a benefit of asexual reproduction compared to sexual reproduction? • A. all members of the population can reproduce themselves • B. They do not require another organism of the opposite sex. • C. The offspring will be as successful in the habitat as the parent. • D. The only source of variation in the next generation is mutation. Feedback: Great job. Question 11 of 33 3.0 Points In what phase of meiosis does separation of sister chromatids occur? • A. meiosis II • B. meiosis I • C. interphase • D. cytokinesis Feedback: Great job. Question 12 of 33 3.0 Points In what phase of meiosis does Independent assortment of homologous chromosomes occur? • A. cytokinesis • B. meiosis I • C. meiosis II • D. interphase Feedback: Great job. Question 13 of 33 3.0 Points What is an individual with the correct number (2n) of chromosomes called? • A. aneuploid • B. autosome • C. euploid • D. polyploid Feedback: Great job. Question 14 of 33 3.0 Points The most common human trisomy is that of chromosome 21, which leads to what? • A. Angelman syndrome • B. Cri-du-chat syndrome • C. Down’s syndrome • D. Klinefelter syndrome Feedback: Great job. Question 15 of 33 3.0 Points What is an individual with an incorrect number (2n-1 or 2n+1) of chromosomes called? • A. polyploid • B. autosome • C. aneuploid • D. euploid Feedback: Great job. Question 16 of 33 3.0 Points In which phase of meiosis does crossing over between homologous chromosomes occur? • A. meiosis II • B. interphase • C. meiosis I • D. cytokinesis Feedback: Great job. Part 3 of 6 - Chapter 8 24.0 Points Question 17 of 33 3.0 Points In a cross between two heterozygous (Aa) individuals, what is the likely percentage of the offspring that will be homozygous? • A. 100% • B. 25% • C. 75% • D. 50% Feedback: When determining the genotype of an offspring, a Punnett Square helps to determine the percentages of the genetic make-up. Review Chapter 8. Question 18 of 33 3.0 Points In humans, females that are heterozygous for a sex-linked disease will on average pass the trait onto what percentage of her male offspring? • A. 0% • B. 25% • C. 50% • D. 100% Feedback: Great job. Question 19 of 33 3.0 Points What are gene variants at the same relative locations on homologous chromosome? • A. homozygotes • B. linked • C. codominant • D. alleles Feedback: Great job. Question 20 of 33 3.0 Points In a cross between a heterozygous (Aa) mother and a homozygous (aa) father, what is the likely percentage of the offspring that will be homozygous? • A. 25% • B. 50% • C. 100% • D. 75% Feedback: Great job. Question 21 of 33 3.0 Points How many unique gametes could be produced through independent assortment by an individual with the genotype AABbCC? • A. 2 • B. 4 • C. 1 • D. 8 Feedback: A gamete would receive one copy of each allele – meaning either A or A, B or b, C or C – and the combination is what we are looking for. Review Chapter 8. Question 22 of 33 3.0 Points What are dominant traits are defined as? • A. when in a heterozygote, expression of two contrasting alleles such that the individual displays an intermediate phenotype • B. an interaction between genes such that one gene masks or interferes with the expression of another • C. a phenomenon in which alleles that are located in close proximity to each other on the same chromosome are more likely to be inherited together • D. in a heterozygote, one trait will conceal the presence of another trait for the same characteristic Feedback: Great job. Question 23 of 33 3.0 Points In a cross between two heterozygous (Aa) individuals, what is the likely percentage of the offspring that will be homozygous dominant (AA)? • A. 50% • B. 25% • C. 75% • D. 100% Feedback: Great job. Question 24 of 33 3.0 Points What is the ABO blood groups in humans is an example of? • A. incomplete dominance only • B. codominance and incomplete dominance • C. multiple alleles and incomplete dominance • D. multiple alleles and codominance Feedback: Great job. Part 4 of 6 - Lecture Material 12.0 Points Question 25 of 33 3.0 Points What is the purpose of a Punnett Square? • A. it is a way to visualize the phenotype and genotype of a cross • B. it is a way to visualize only the phenotype in a population • C. it is a way to visualize only the genotype of a cross • D. it is a way to visualize the chromosomes in a population Feedback: Great job! Question 26 of 33 3.0 Points What is the central dogma of molecular biology? • A. DNA is read by RNA, which is then read and proteins are produced • B. Proteins cycle through the cell, ending in RNA coiling • C. RNA initiates DNA replication, which controls all aspects of life • D. Proteins can reproduce unassisted Feedback: Great job! Question 27 of 33 3.0 Points What can cause both helpful changes in our DNA sequence, such as an adaptation, as well as harmful ones, such as cancer? • A. mutations • B. heterozygote • C. dominant • D. replication Feedback: Great job! Question 28 of 33 3.0 Points What is the term for an individual with one dominant copy of a gene, and one recessive copy of the same gene? • A. homozygote • B. dominant • C. heterozygote • D. recessive Feedback: Great job! Part 5 of 6 - Part 3: Lab Lecture Material 12.0 Points Question 29 of 33 3.0 Points What is a method for performing an experiment more than one time to ensure accuracy in results? • A. accuracy • B. replication • C. randomization • D. precision Feedback: Correct! Sometimes, the experiment is repeated in the same lab, but often times it happens in other labs. Question 30 of 33 3.0 Points Which type of experimental design informs the researchers whom the treatment group is, but not the study subjects? • A. single blind • B. triple blind • C. no blind • D. double blind Feedback: Correct! Being aware of a treatment can influence the results of an experiment, so blind experiments where one group is not aware of the set up are common. Question 31 of 33 3.0 Points Why is randomization important in an experimental design? • A. to increase the number of sample units • B. to make it easier for the researcher to find participants • C. to shorten the time it takes for the experiment • D. to reduce bias in the experiment Feedback: Correct! Randomization is important so that researchers remove their prejudice with respect to the results. Question 32 of 33 3.0 Points What is the importance of a large sample size in an experiment? • A. it decreases the amount of variation • B. it increases the statistical power • C. it makes it easier to find participants • D. it results in a larger margin of error Feedback: Correct! A larger sample size means that the results are more reliable due to fewer outliers as well as the ability to gather data and mathematical facts. Part 6 of 6 - Part 6 - 1 Question 4 points - 1 question 4.0 Points Question 33 of 33 4.0 Points What is the overall purpose of mitosis? • A. To accomplish nuclear division • B. To produce gametes • C. To accomplish cell division • D. To produce daughter cells Feedback: The cell cycle is a continuous process in which the cell is prepping for division, replicating DNA and then the nucleus, finally dividing the cell. Review the cell cycle in Chapter 6.