Concept Check 14.1 C O N C E P T C H E C K 14.1 1. Pea plants heterozygous for flower position and stem length (AaTt) are allowed to selfpollinate‚ and 400 of the resulting seeds are planted. Draw a Punnett square for this cross. How many offspring would be predicted to have terminal flowers and be dwarf? (See Table 14.1.) 1. According to the law of independent assortment‚ 25 plants (1⁄16 of the offspring) are predicted to be aatt‚ or recessive for both characters. The actual result is likely
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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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from my group: Vestigial winged offspring: 0 Wild Type winged offspring: 10 Data from class: Vestigial winged offspring: 42 Wild Type winged offspring: 237 Data from all classes: Vestigial winged offspring: 345 Wild Type winged offspring: 1‚297 The hypothesis of the fruit fly mating experiment was that when placing homozygous recessive virgin female fruit flies in a mating tube with two homozygous males of each wing type‚ vestigial and wild type‚ the
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BIOLOGY 207 SIMULATOR ASSIGNMENT MULLIS POPULATION WRITTEN RESULTS SECTION In vial one‚ a wild type hyper female Drosophila and wild type mellow male Drosophila were crossed respectively to determine the dominant behavioural phenotype. The first reciprocal cross was then carried out in vial two to define whether or not the behavioural phenotype is x-linked recessive. According to the results obtained from vial one‚ when the wild type hyper female and wild type mellow male was crossed‚ the resulting
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1. Did the construction of the phylogenetic tree based on the 14 living Caminalcules change the way you would group Caminalcules species in your taxonomic classification (chart)? What does this suggest about classification based on strictly of similarity versus evolutionary relationship? The phylogenetic tree was more of an evolutionary tree. It showed the evolution of the organisms and their ancestors or traits that they branched off of. The chart however just simply organizes and separates the
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1.3 Transitional fossils A transitional fossil is any fossilised remains of a life form that has traits common to both a presumed ancestral group and its presumed derived descendant group. Transitional fossils are used as evidence to support evolutionary theory as they are suggested to demonstrate the gradual transition from one species to another through a multitude of changes. In essence‚ the transitional fossils are the remains of the species that have gone extinct‚ and these species are represented
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pair of homologous chromosomes separates independently of the members of other pairs so the results would be random. This law is known as the law of independent assortment. In this laboratory experiment we will count and score the phenotypes of Drosophila melanogaster from a F2 generation of a dihybrid cross involving loci on the two major autosomes‚ chromosome two and three. A dihybrid cross is a cross between two parents that differ by two pairs of alleles. An example for this would be a parent
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Abstract The main purpose of this experiment was to find which chromosome our unknown gene mutation is presented on and the exact location on that chromosome. In order to do so many cycles of crosses were completed using linkage analysis on Drosophila melanogaster‚ a type of fruit fly used in this experiment to identify our unknown gene mutation‚ unknown. Using virgin bar females crossed with Curly/Plum; Dichaete/Stubble male fruit flies represented our Discriminant Cross one (DC1). The DC1
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Outline for Chapter 10 Define the following terms… What is Evolution? (Section 10.1‚ pp 222-224) Figures to review: 10.1‚ 10.2 Biological evolution • Biological evolution is defined as any genetic change in a population that is inherited over several generations. These changes may be small or large‚ noticeable or not so noticeable. Species • the major subdivision of a genus or subgenus‚ regarded as the basic category of biological classification‚ composed of related individuals
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ancestry) EXTINCTION • species that no longer exist • ExAncAon = change ∴species living on Earth changed over Ame TRANSITIONAL FORMS sils Fos VESTIGIAL TRAITS • Structure reduced funcAon à ing of no to marginal importance v es Lipecito survival/reproducAon of S organism; but found as funcAoning structure
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