On the Inheritance of Acquired Traits and the Theory of Use and Disuse. Charles Darwin’s On the Origin of Species described in great detail a means to explain the theory of evolution through natural selection. Within his work he makes many observations in relation to the heritability of acquired characteristics. As he describes the effects of artificial selection‚ he dawns on the topic of “The effects of habit and of the use or disuse of parts; correlated variation; inheritance”(Darwin‚
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Lab: investigating hooked law with springs Purpose: to find spring constants of different springs using the slope of a graph of change in heights vs. the weight force. Also‚ to be able to understand how spring constants change when you add springs in a series or paralle Pre lab predictions: We predicted that the graph of gravitational force (mg) as a function of stretch (delta x) would look like Data: Spring #1: y = 8.2941x + 0.0685 This table represents the different distances that
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The purpose of this experiment was to determine the F1 genotype of fruit fly traits using the phenotypic ratio of the F2 generation and to express these results of the unknown cross through a Chi-square model and Mendelian genetics. After the experiment‚ it was found that the parents held a heterozygous genotype through using the Chi-square model‚ and that the observed and expected values fall within the Chi-squared value which also falls into the p-value. The Chi-squared value was 5.64‚ the degrees
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“try to understand what it is to be human” Biocultural approach: the relationship between what humans have inherited genetically and what they learn culturally Holistic: understanding people with all aspects of human nature Comparative: cross cultural Ethnocentric: a view that is centered on a specific ethnic group (usually ones own) belief in the superiority in ones ethnic group Cultural Relativism: a view that considers human interaction and behavior within their own culture. Sex vs. gender
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“To what extent does genetic inheritance influence behavior?” A debate of nature vs. nurture‚ as in whether it is our inherited genes or environmental factors that affect our behavior‚ has been going on for years. There are no true experiments on genetic inheritance influencing behavior due to ethical reasons. Only quasi-experiments and theories of pre-existing data are available that are on genetics or environmental factors affecting behavior. With the few studies existing one can still argue
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of the specialized underlying structures of these life-forms. In order for us to appreciate these special adaptation‚ we first need to know how a typical plant or an animal cell organelle behaves in different water and solute concentrations. In this lab‚ we will determine the effects of hypertonic‚ isotonic and hypotonic solutions on plant and animal cells. In general when an animals cell’s placed in hypertonic solution it shrivels; a plant cell on the other hand undergoes plasmolysis. When an animal
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date: Week of Feb. 11th Fly Lab Assignments 1-4 INSTRUCTIONS Answer questions on a separate sheet of paper. Be sure to answer all parts of each question. Make sure you number all questions EXACTLY as they are numbered on this worksheet. This assignment will be turned in at the beginning of class before the quiz. Late assignments WILL NOT be accepted. DON’T FORGET: Fly lab/epistasis assignment on pgs. 41-42 in lab manual is also due at the beginning of lab. Assignment 1: Getting to Know
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Andres Santana per.4 4/20/15 Pedigree Lab Introduction How can you spot different pattern of inheritance? When we started this lab the question (subject) we had to try and solve was ‘Which pattern of inheritance is present in the O’Smithsteinskis and AkimGarciaChan family pedigree? If when looking at the number of people shaded in our pedigree and find that the number is increasing each generationon then we can assume that the pattern of inheritance found here is Complete Dominance
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Fly Lab Shannon Ladd Introduction: Famers and herders have been selectively breeding their plans and animals to produce more useful hybrids for thousands of years. It was somewhat of a hit or miss process since the actual mechanisms governing inheritance were unknown. Knowledge of these genetic mechanisms finally came as a result of careful laboratory breeding experiments carried out over the last century and a half. A contributing geneticist named Gregor Mendel (1822-1884)‚ discovered through
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Toxicology Lab 1. In this investigation‚ a wide range of concentrations of Sodium Chloride (NaCl) solution were created and the effects that they had on radish seeds were tested. This ultimately created a doseresponse experiment in which it was detectable whether or not radish seeds were a reliable bioassay for the toxicity of NaCl. The goal of this experiment was to determine a correlation between toxicity and seed germination/radicle
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