BIOL 180 / BIOL180 quiz 4

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Question 1 How is it possible that a person can have blood type AA, BO or AB, for example? Question options: there are two alleles, and a person gets all three, but only expresses two ther... e are three alleles, but a person only has two alleles there are three alleles, and a person expresses all three copies there are two alleles, but a person only has one allele Hide Feedback Great job. Question 2 What is the process of cell division called in prokaryotes? Question options: Single mutation Binary fission Double fusion Cytokinesis Hide Feedback Great job. Question 3 What is the term for a cell's complement of DNA? Question options: gamete nucleus chromosome genome Hide Feedback Great job. Question 4 During which stage in interphase does DNA synthesis occur? Question options: Mitosis G2 phase S phase G1 phase Hide Feedback Great job. Question 5 In diploid organisms, chromosomes are in a matched pair. What is the term for these chromosomes? Question options: dissimilar homologous heterologous unrelated Hide Feedback Great job. Question 6 What is the purpose of checkpoints in the cell cycle? Question options: to keep any foreign DNA out of the cell to make the division move faster to maintain protein health in the cell to ensure detrimental mutations are not passed on Hide Feedback Great job. Question 7 Most animals and plants are diploid. What are cells containing two sets of chromosomes are referred to as? Question options: gametes somatic aneuploid polyploid Hide Feedback Great job. Question 8 During meiosis the 23 pairs of human chromosomes assort independently. Approximately how many possible gametes result from a single person? Question options: 23 million 8 million 23,000 8,000 Hide Feedback Great job. Question 9 Humans would best be described as having which of the following life cycles? Question options: diploid-dominant haploid-dominant alternation of generations gametophyte dominant Hide Feedback Great job. Question 10 In what phase of meiosis does Independent assortment of homologous chromosomes occur? Question options: meiosis II interphase meiosis I cytokinesis Hide Feedback Great job. Question 11 What is an individual with an incorrect number (2n-1 or 2n+1) of chromosomes called? Question options: autosome euploid aneuploid polyploid Hide Feedback Great job. Question 12 What is an individual with the correct number (2n) of chromosomes called? Question options: aneuploid autosome euploid polyploid Hide Feedback Chromosomal abnormalities can occur in any species; remember, poly- means more, aneu- means not good and autosomes are chromosomes not associated with sex. Review Chapter 7. Question 13 What is the genetic make-up of an organism is described as? Question options: alleles zygotes genotype phenotype Hide Feedback Great job. Question 14 In a cross between two heterozygous (Aa) individuals, what is the likely percentage of the offspring that will be heterozygous? Question options: 75% 100% 50% 25% Hide Feedback Great job. Question 15 What is incomplete dominance? Question options: in a heterozygote, one trait will conceal the presence of another trait for the same characteristic when in a heterozygote, expression of two contrasting alleles such that the individual displays an intermediate phenotype 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 an interaction between genes such that one gene masks or interferes with the expression of another Hide Feedback Review Chapter 8. Question 16 How many unique gametes could be produced through independent assortment by an individual with the genotype AaBbCc? Question options: 4 8 1 2 Hide Feedback A gamete would receive one copy of each allele – meaning either A or a, B or b, C or c – and the combination of the three is what we are looking for. Review Chapter 8. Question 17 Mendel made crosses between parental lines of pea plants that were homozygous for different alleles of the traits he was studying. When crossing two parents, the F1 generation were all what? Question options: recombinants heterozygous homozygous dominant homozygous recessive Hide Feedback Great job. Question 18 How many unique gametes could be produced through independent assortment by an individual with the genotype AABbCC? Question options: 1 2 8 4 Hide Feedback Great job. Question 19 What is the result of mitosis? Question options: Two cells become four identical cells One cell becomes two identical cells Two cells become four non-identical cells One cell becomes two non-identical cells Hide Feedback Great job! Question 20 What is the theme behind Mendelian inheritance? Question options: Traits are controlled by a single gene, and you get one copy from each parent. All diseases are the result of mutations. Even with peas, color and size are not predictable using a Punnett Square. The majority of traits are recessive, so do not change often. Hide Feedback Great job! Question 21 What is the purpose of a Punnett Square? Question options: it is a way to visualize the phenotype and genotype of a cross it is a way to visualize only the phenotype in a population it is a way to visualize only the genotype of a cross it is a way to visualize the chromosomes in a population Hide Feedback Great job! Question 22 What is the independent variable in the following hypothesis: bacterial growth in an incubator may be affected by temperature? Question options: incubator temperature the affect bacterial growth Hide Feedback Question 23 Which of the following is NOT a reason why Wakefield's study on the connection between autism and vaccinations was flawed? Question options: the study was not replicable the study acquired samples unethically and, quite possibly, illegally the study had a small sample size the authors committed deliberate fraud to support their hypothesis the study demonstrated everyone's well being was taken care of Hide Feedback . Question 24 Which type of variable does not change during an experiment, and serves as a comparison point for all data points? Question options: independent control random dependent Hide Feedback [Show More]

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