1. Explain what must happen in order for Greg and Susan to have a child with O type blood and nail-patella syndrome. Greg needs to pass down his chromosome 9 which carry the alleles‚ n and i. Susan also has the n and I alleles on chromosome 9. If both these alleles from both parents are passed down‚ it will create the allele Nnii which produced the blood type O and nail patella syndrome. 2. Determine all possible parental and recombinant gametes produced by Greg and Susan. Greg’s parental gametes
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1. Evidence of evolution suggests that the mechanisms of inheritance‚ accompanied by selection‚ allow change over many generations outline the impact on the evolution of plants and animals of: * changes in physical conditions in the environment * changes in chemical conditions in the environment * competition for resources Changes in physical conditions in the environment * These include natural conditions‚ such as temperature and the availability of water. * The Australia landmass
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this genetic complementation test tell you? a. The genes are part of distinct biosynthetic pathways b. The two lines exhibit different mutations in the same gene c. More than one gene is involved in determining the phenotype d. The allele is pleiotropic e. The allele exhibits incomplete dominance 2. In a testcross of two plants where one parent is tall and has normal leaves and the other parent is a dwarf and has mottled leaves (tm/tm)‚ the following numbers of progeny genotypes are counted.
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influential then another in developing specific traits. The more powerful gene is called the dominant gene and the less powerful is the recessive. A variation of a gene and the trait it controls‚ such as the color of ones eyes or hair is called in allele. Most diseases have genetic disorders. A diseases springs from genetics that are passed along from the parents. So called genetic diseases can be classified in 3 ways single gene defects‚ chromosomal disorders and multi factorial. 1 in 200 births
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AP Biology Summer Summaries There are many differences between proximate and evolutionary causes and explanations on why we are such easy targets for diseases. The proximate explanations are described by its anatomy‚ physiology‚ and biochemistry. Evolutionary explanations go into detail on what would happen if we didn’t have the genes that cause us to get sick. Proximate causes look for what genes it is made up of and how it works. Evolutionary causes are why natural selection hasn’t eliminated
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Explain the phrase “dihybrid cross” and state Mendel’s Principle of Independent Assortment. Ch. 12.6: “A Brilliant Law: Indep…” text + figures 5 Explain the phenomena of codominance‚ incomplete dominance and epistasis in terms of Mendel’s alleles at one or more loci. Ch. 12.6: “Brilliant Laws: Var…” text + figures 6 Apply Mendel’s principles to genetic problems that involve monohybrid and dihybrid crosses. Ch. 12.6: “A Brilliant Law: Seg…”‚ “A Brilliant Law: Indep…”‚ and “Brilliant
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why it may be important to collect data from a larger population. E. If all yellow seedlings were removed from the population‚ would the next generation still have a chance at displaying the yellow allele? Explain. F. Estimate the number of generations required before the yellow alleles were eliminated from the population. Explain. G. Would a cross between a homozygous and a heterozygous parent show the same ratios? Explain. Exercise 2: Simple Chi-square Analysis OMIT
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Revision Checklist for IGCSE Biology 0610 Guide for Students REVISION CHECKLIST for IGCSE Biology 0610 A guide for students How to use this guide The guide describes what you need to know about your IGSCE Biology examination. It can be used to help you to plan your revision programme for the theory examinations and will explain what the examiners are looking for in the answers you write. It can also be used to help you revise by using the tick boxes in Section 3‚ ‘What you need to know?’‚ to
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Individual O •Ai indicates allelic state (i.e. an allele’s genotype) •α1 . . . α6 uniquely identify the 6 alleles in Individuals 1-3 •α1 . . . α6 imply nothing about allelic state (i.e. allele’s genotype) A Possible Outcome for Individual “O” Individual 1 A1A1 α1α2 Individual 2 A1A2 α3α4 Individual 3 A3A3 α5α6 Individual 4 Individual 5 Individual O α3α3 A1A1 •DEFINITION: Autozygous means alleles are “identical by descent” •Individual O is “autozygous” (α3α3) •Individual O is homozygous (autozygotes
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BIOLOGICAL AND ENVIRONMENTAL FOUNDATIONS I. GENETIC FOUNDATIONS A. The foundations of development are heredity and environment. Heredity supplies our genotype (genetic makeup)‚ while heredity and environment combine to form the phenotype (observable characteristics). B. The Genetic Code 1. Chromosomes store and transmit genetic information. Each cell in the human body contains 23 pairs of chromosomes. 2. DNA (deoxyribonucleic acid) molecules make up chromosomes. 3. A gene is a segment of a DNA molecule
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