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Practice Exam 4 Supplemental InstructionIowa State UniversityLeader:Emma BCourse:Bio 211Instructor:Dr. StewartDate:14 Nov. 2019 Helpful Videos: (Note: Some of these videos go more in depth than you will need to know, or it contains things that were on a previous exam or will be on the next exam. You should be able to tell what things you do not need (AKA we haven’t talked about it in lecture). These are just to help you see and hear concepts in a different format.)Crash Course-“The Sex Lives of Nonvascular Plants: Alternation of Generations” Crash Course-“Vascular Plants=Winning!” Crash Course-“The Plants and the Bees: Plant Reproduction”- Sisters “Viruses” Course “Mitosis: Splitting up is Complicated” Course- “Meiosis: Where the Sex Starts” Course- “Heredity” The waxy covering on leaves that prevents water loss through the epidermis is called the…?StomataGuard CellsCuticleSepal The appearance of xylem and phloem is a trait of _________ plants.Nonvascular plantsVascular plants Seed plants Seedless PlantsWhich of the following plant lineages spends all of its life in aquatic habitats?Nonvascular plantsGymnosperms Green Algae Angiosperms A plant is found very low to the ground and acquires water and nutrients through rhizoids. What plant lineage is this, and what is it lacking that prevents it from growing off of the ground?Nonvascular plants, cuticle Gymnosperms, cuticle Green algae, stomata Nonvascular plants, lignin The majority of this plant lineage’s life is spent as a diploid sporophyte. Through meiosis, haploid spores are produced and grow into a multicellular, haploid gametophyte through mitosis. Haploid gametes are produced and combine via fertilization and return to the multicellular, diploid sporophyte. What plant lineage is described in this life cycle?Green AlgaeGymnospermsAngiospermsSeedless Vascular Plants Which of the following plant lineages DOES NOT have xylem, phloem, and lignin?Nonvascular plantsGymnosperms Angiosperms Seedless vascular plantsSome of the factors that contributed to the Influenza Pandemic of 1918-1920 includes…Crowded conditions and unsanitary conditions during WWI Highly airborne Increase global travel All of the above Which reproductive cycle involves a virus incorporating itself into the host’s DNA?Uncoating Lytic Lysogenic Transmission Viruses can exit from a host cell by budding or bursting out of the cell in a process known as…?Uncoating Latency-period of dormancy during lysogeny LyticLysis The two daughter cells created during mitosis are…?Genetically identical Genetically different Similar in complexity Different in complexityThese types of chromosomes are the same size, shape, and carry the same genes. One comes from your mother and one comes from your father. Sister Chromatids Homologous Chromosomes Genotype Somatic cells What is the process of the division of cytoplasm of daughter cells called?AnaphaseCytokinesis Interphase Binary Fission Ploidy level refers to…?The number of cells in the bodyThe number of chromosomes in a cell The number of hairs on your headThe number of protists in the world What is an allele?Versions of genes at a particular locusVersions of chromatin within a cellA variation of chromosomes within a single cellVersions of traits within a chromosome What is the overall goal of Meiosis?To decrease the size of populations To increase genetic variation in populationsTo create two haploid daughter cellsTo decrease fitness of an organism If gametes are haploid cells, what must happen in order to make then diploid?Fertilization Independent Assortment Meiosis Crossing Over What is true about independent assortment?Chromosome pairs are dependent on otherOrientation of homologous chromosomes mid-cell is planned Two equally probable arrangements of chromosomes are possibleThere is a 100% chance one orientation will happen over the otherIf an organism has a genotype of PP, what term is used to describe it?Homozygous recessiveHomozygous dominantHeterozygous Monozygous A plant that exhibits purple flowers is crossed with a second plant that also exhibits purple flowers in the parent generation. In the F1 generation, three flowers exhibit purple flowers while one exhibits white flowers. What were the genotypes of the parent generation? One homozygous dominant and one homozygous recessiveOne homozygous dominant and one heterozygous Both homozygous recessive Both heterozygous When crossing a heterozygous organism with a homozygous recessive organism, what percentage of their offspring will be homozygous recessive?25%50%75%100% In a population of giraffes, most giraffes exhibit long necks but some exhibit short necks due to a deleterious recessive allele. If, in the F1 generation, 25% of giraffes exhibit short necks, what was the genotype of the parents?Both homozygous recessive Both homozygous dominant Both heterozygous None of the aboveIn the F1 generation, a pea plant with a homozygous dominant genotype that displays yellow color and round seeds, (YYRR), is crossed with a homozygous recessive genotype that displays green color and wrinkled seeds, (yyrr). When crossing two plants in the F2 generation, what percentage of the offspring will exhibit round and green seeds?6.25%56.25%75%18.75% ................
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