DIFFERENCES IN SUN AND SHADE LEAVES OF AVOCADO TREES BY PHENOTYPIC PLASTICITY INTRODUCTION: Phenotypic plasticity‚ or differing phenotypes from one genotype in different environmental conditions‚ is a way for sessile organisms to adapt to changing environmental conditions (Valladares et al.‚ 2007). Plasticity was expected to be abundant‚ however‚ it did not occur as often in nature due to resource limitations and environmental stress (Valladares et al.‚ 2007). An experiment by Matos tested
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Make-up test study guide Test 1: 1. 3 categories of natural sciences a. biology: microbiology b. physical: chemistry c. applied: medicine 2. relevant steps to scientific method a. observation b. hypothesis c. experimentation d. conclusion e. extra: theory 3. Science: objective‚ testable‚ fact; non-science: subjective‚ untestable‚ opinions 4. Life is is a characteristic that distinguishes objects that have signaling and self-sustaining processes from those that do not‚ a. Characteristics:
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Jeana Chun Partners: Elizabeth Schwoerer‚ Amanda Shi Honors Bio Period 4 Maloney 13 March 2015 Temperature And Its Effect On Gene Expression Introduction Gene expression‚ the process by which genotype is expressed as phenotype‚ is one of the most important biological functions living organisms are capable of carrying out. Although a cell may have thousands or hundreds of thousands of genes‚ only the ones needed this is determined by the environment are turned on at any given time. In bacteria
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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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Cancer Epidemiology Cancer is not a single disease; it is a myriad or collection of diseases with many different manifestations as there are many different types of tissues and cell types Cancer is a disease of abnormal gene expression. Cells are constantly evolving and have the natural selection pressures to change Common biological properties of tumor cells: 1) Deregulated clonal cell growth- all cells in a tumor originated from one single cell that acquired mutations that made it deregulated
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Hemochromatosis is a recessive gene disorder in which there is an excessive amount of iron salts in the tissues which damages the tissues in the liver‚ causes discoloration of the skin and leads to diabetes mellitus. This may cause symptoms such as abdominal pain‚ weakness and weight loss. Due to excessive amount of iron in the liver‚ it can lead to heart failure. Another common disease is Porphyria Cutanea Tarda (PCT) which arises from a lack of the enzyme uroporphyrinogen decarboxylase. Most patients
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BIOLOGY TIME: 2 HOURS (1) Food spoilage is mainly due to a) Poor quality b) high protein content c) the activities of decomposers d) excess water (2) Which of the following organisms is transmitted by houseflies? a) Plasmodium b) Vibro cholera c) Trypanosoma d) Gonococcus sp (3) The odontoid process is associated
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OUTLINE: Introduction to Evolutionary Anthropology I- INTRODUCTION Anthropology is a holistic Science with five disciplines: 1- Socio-cultural anthropology: compare the human cultures and societies. 2- Linguistic and semiotic anthropology: focused on how language and other system of human communication contribute to reproduction‚ transmission and transformation of culture. 3- Archaeology: study of the material evidence of human activities in the past. 4- Medical anthropology: focuses on human
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Race is a biological entity‚ but it has been proven that the concept of race can be constructed or manipulated by societies that even though since an anthropological and biological perspective the barrier between races is very clear. Ethnicity isn’t a societal concept founded by the color of skin‚ since everyone knows individuals of the identical race have variations of skin color. For example in European circles‚ Middle Easterners such as Arabs‚ Jews‚ Iranians (Indo-Europeans or Aryans); North
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Genetic Diversity of Wild Organisms * Populations with low genetic diversity are not well suited to surviving environmental change * Are also prone to in breeding depression * Inbreeding depression – when individuals with similar genotypes-typically
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