SIMULATION OF NATURAL SELECTION MATERIALS Plastic or paper bag containing 100 beads of two colours additional beads as needed. AIM To prove that both allele and genotype frequencies in a population would not remain constant if natural selection occurs. Natural selection is the process whereby organisms better adapted to their environment tend to survive and produce more offspring. INTRODUCTION Natural selection‚ the differential survival and reproduction of individuals was first proposed by
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LS1 Spring 09 Name & ID________________________________ VERSION A • Don’t open your exam until instructed to. • Write your name and student number on every page of the test before handing in the test (you will lose 5 points if you don’t!). • Use a pencil on the multiple choice‚ and a pen on the short answer. • Mark scantrons neatly‚ one answer per question. Erase changes completely. • Answer written questions in space provided. Do not write on the back. • Only answers on the front side
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BIO 30 4TH EXAM REVIEWER Merlyn S. Mendioro Delayed and Extra-chromosomal Inheritance 1.) Genetic factors that are located outside the chromosome: plasmagenes‚ plasmons‚ cytogens‚ plasmids. 2.) Plasmid inheritance implies: perpetuation through DNA Replication. 3.) Killer gene particulate material in Paramecium aurelia: kappa 4.) Mirabilis jalapa shows extrachromosomal inheritance in the ___________. When a pale male parent is crossed with a green female the result usually is
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Chapter 10 and 11– Homework 1. Describe the stages of transcription. A. Begins when RNA polymerase binds to promoter B. RNA polymerase moves along DNA‚ adding complimentary ribonucleotides‚ until the end of the gene is reached C. RNA polymerase can only add to the 3’ end D. Transcription occurs in the 5’ to 3’ direction E. An RNA transcript is the end result F. All three types of RNA are transcribed from DNA Name 3 classes of RNA and their function. Ribosomal RNA‚ which is the site
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Chapter 10 and 11– Homework 1. Describe the stages of transcription. Initiation- Initiator tRNA binds to small ribosomal subunit. Small subunit/tRNA complex attaches to mRNA and moves along it to an AUG “start” codon. Large ribosomal subunit joins complex. Initiation must occur in the order listed above. Elongation- mRNA passes through ribosomal subunits. tRNAs deliver amino acids to the ribosomal binding site in the order specified by the mRNA. Peptide bonds form between the amino acids and
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fauna and flora‚ some of which is quite similar to the life on Earth. The many different species of the moon Pandora show evidence to support the theory of evolution through the natural selection‚ morphological homology‚ and violations of Hardy-Weinberg equilibrium. Natural selection
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The meaning of this p-value is that the there is a difference between the observed and the expected genotype numbers. This signifies that the Hardy-Weinberg equilibrium is not included in the population of the experiment‚ which means that it is evolving. It is important to use the population data for the entire course of biology 213 rather than the individual classes because the sample size of the population
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the initiation of transcription in Eukaryotes. Label components in the diagram‚ as necessary‚ and briefly outline the process. (15 marks) 2. Name five factors that influence the distribution of genes in a population to upset the Hardy Weinberg equilibrium‚ and describe each using an example (15 marks) SECTION C Answer ONE question from this section 3. The following is a pedigree of a family in which a rare form of colour blindness is found (filled-in symbols). Indicate as much
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iThis is a guide. You will find it very helpful‚ but it does not contain everything that has been covered and could be asked on the exam. I can and will pull questions out of the textbook‚ so make sure you’ve been reading. Go back through the homework assignments and feel free to use the practice tests on Mastering Biology as well. Chapter 14 – Evolution of Evolutionary Thought Definitions : uniformitarianism: Earth’s present landscape was produced by past action of the same geological processes
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of Populations In general‚ you should understand how evolution is operating on the population level. The individual organisms carry the genes that natural selection acts upon‚ but it is the genes of the population (gene pools) that evolve. Hardy-Weinberg Equation (p2 + 2pq + q2 =1 and p + q = 1) Red plant color is dominant in a particular species of wildflower. In a wild population‚ 250 of the 5000 individual plants have white flowers. From this type of question‚ you should be able to calculate
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