The Dumpy Sepia X Wild Type Dihybrid cross using Drosophila Melanogaster. Abstract An experiment was performed on the fruit fly (Drosophila Melanogaster) in order to investigate Gregor Mendel’s postulates and determine if his laws were in fact correct. This was done by crossing Virgin Wild type females with Dumpy sepia males‚ and then inter-crossing their progeny (the first filial generation) in order to produce the second filial generation which was then studied. The results of this were designed
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(b) heterozygous (c) a monohybrid (d) a dihybrid 2. At the end of meiosis‚ how many haploid cells have been formed from the original cell? (a) one (b) two (c) three (d) four 3. When Mendel transferred pollen from one pea plant to another‚ he was ___ the plants. (a) self pollinating (b) cross pollinating (c) self fertilizing (d) cross fertilizing 4. A short pea plant is (a) homozygous recessive (b) homozygous dominant (c) heterozygous (d) a dihybrid 5. Which describes a dominant
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¬¬¬Biology Exam 4 Energy III – Cellular Respiration (Krebs Cycle and Electron Transport Chain) A. The Krebs Cycle a. Energy i. The net gain of 2 ATP and 2 NADH represents an effective transfer of 20 kcal of energy to ATP (about 10 kcal each) about 80 kcal of energy to NADH (about 40 kcal each)‚ for a total of about 100 kcal ii. Complete oxidation of glucose results in the release of 684 kcal of energy‚ significant energy still remaining in pyruvate b. Eukaryotes i. Pyruvate is transported
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in offspring. 2. Define the following terms: true-breeding‚ hybridization‚ monohybrid cross‚ P generation‚ F1 generation‚ and F2 generation. True breeding: When true-breeding plants self-pollinate‚ all their offspring are of the same variety. For example‚ purple flowers give rise to plants with purple flowers. Hybridization: The crossing of two true-breeding varieties is hybridization. Monohybrid cross: A monohybrid cross is a genetic cross using a single trait with two alleles. P generation:
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11. What is the structure of a DNA molecule? a. What forms the backbone of the DNA molecule? b. What kind of bonds occur between the 3’ OH on the 3’ C of one nucleotide and the phosphate of the next? b. What forms the “steps of the ladder”? c. What kind of bonds hold the nitrogen bases together? d. What is meant by anti-parallel strands? 12. What is Chargaff’s rule (what binds with what?) 13. How does DNA fold into a chromosome? (the 6 steps) 14. What is a nucleosome? 15. What are
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http://www.mhhe.com/biosci/genbio/virtual_labs/BL_05/BL_05.html Upon completion of the Punnett Squares Virtual Lab‚ please answer the following questions thoroughly using complete sentences and proper grammar and spelling. 1. For one of the monohybrid crosses you performed in this Investigation‚ describe how to use the phenotype ratios to determine the percentage of offspring displaying each trait. Well for one once you have the phenotypes all done on your Punnet Square then you go through and
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Lab 9 Elizabeth Stassenko 11/25/14 Plant Genetics Purpose: To predict and to identify the genotype of offspring using a Punett Square Exercise 1: Observing a Monohybrid Cross Hypothesis using Punett square: Gametes X x X XX Xx x Xx xx Data: Questions: A. What are the predicted ratios of the phenotypes in the plants? I predicted ¾ will germinate as green and ¼ will germinate as yellow B. What was the total number of seeds that germinated? 80 C.
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AP Lab Seven Genetics of Organisms Dan Torres AP Biology Block 1 January 24‚ 2011 Introduction & Background Fruit flies have made a huge contribution towards knowledge about genetics‚ but for most people‚ they are just annoying insects that are attracted to their fruit. Their scientific name is Drosophila melanogaster‚ and to scientists‚ they have been a key to understand many principles of heredity including sex linked inheritance‚ epistasis‚ multiple alleles‚ and gene mapping. Fruit
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Chapter 12 Cyclins and cyclin-dependent kinases are regulatory proteins that assist in the cell cycle. Particular protein kinases give the go-ahead signals at G1 and G2 checkpoints. These protein kinases are present at a constant concentration in the cell but are inactive unless in the presence of cyclin‚ these are cyclin dependent kinases. The activity of a cdk rises and falls with the concentration of cyclin. Cyclin levels rise during the S and G2 phases then fall abruptly in the M phase
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AP Lab # 7: Genetics of Organisms Virtual Fly Lab Link for flylab: You will be using a sample subscription‚ so once you sign up you will only have access for 24 hours. It is important to do all the pre-work before logging in to get your experimental numbers. Click on the fly lab button. After reading through the lab and understanding what you will be doing‚ click on start lab. Introduction FlyLab will allow you to play the role of a research geneticist. You will use FlyLab to study important
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