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Genetics

Gene Regulation powerpoint

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Chapter 18: Regulation of Gene Expression Correlations to AP Bio Course Curriculum See Unit 3 Essential Knowledge document for all EK statements for Chapter 18. Correlations to AP Bio Course Curriculum Learning Objective 3.18: The student is able to describe the connection between the regulation of gene expression and observed differences between different kinds of organisms. Learning Objective 3.19: The student is able to describe the connection between the regulation of gene expression and observed differences between individuals in a population. Correlations to AP Bio Course Curriculum Learning Objective 3.20: The student is able to explain how the regulation of gene expression is essential for the processes and structures that support efficient cell function.

Ap Biology Chapter 14 Genetics Review

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Chapter 14 #5 A black guinea pig crossed with an albino guinea pig produces 12 black offspring. When the albino is crossed with a second black one, 7 blacks and 5 albinos are obtained. What is the best explanation for this genetic situation? Write genotypes for the parents, gametes, and offspring Answer Albino (b) is a recessive trait; black (B) is dominant. First cross: parents BB ? bb; gametes B and b; offspring all Bb (black coat). Second cross: parents bb ? Bb; gametes 1/2 B and 1/2 b (heterozygous parent) and b; offspring 1/2 Bb and 1/2 bb #6

Ap Biology Genetics Questions

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Genetics Problems 1. A rooster with gray feathers is mated with a hen of the same phenotype. Among their offspring, 15 chicks are gray, 6 are black, and 8 are white. What is the simplest explanation for the inheritance of these colors in chickens? What offspring would you predict from the mating of a gray rooster and a black hen? 2. In some plants, a true-breeding, red-flowered strain gives all pink flowers when crossed with a white-flowered strain: RR (red) x rr (white) ---> Rr (pink). If flower position (axial or terminal) is inherited as it is in peas what will be the ratios of genotypes and phenotypes of the generation resulting from the following cross: axial-red (true-breeding) x terminal-white? What will be the ratios in the F2 generation?

Ap Biology Chapter 15 Review

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Chapter 15 The Chromosomal Basis of Inheritance Overview: Locating Genes Along Chromosomes Mendel?s ?hereditary factors? were genes, though this wasn?t known at the time Today we can show that genes are located on chromosomes The location of a particular gene can be seen by tagging isolated chromosomes with a fluorescent dye that highlights the gene Concept 15.1: Mendelian inheritance has its physical basis in the behavior of chromosomes Mitosis and meiosis were first described in the late 1800s The chromosome theory of inheritance states: Mendelian genes have specific loci (positions) on chromosomes Chromosomes undergo segregation and independent assortment The behavior of chromosomes during meiosis was said to account for Mendel?s laws of segregation and independent assortment

Ap Bio. Chapter 14 Review

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Chapter 14 Mendel and the Gene Idea Overview: Drawing from the Deck of Genes What genetic principles account for the passing of traits from parents to offspring? The ?blending? hypothesis is the idea that genetic material from the two parents blends together (like blue and yellow paint blend to make green) The ?particulate? hypothesis is the idea that parents pass on discrete heritable units (genes) Mendel documented a particulate mechanism through his experiments with garden peas Concept 14.1: Mendel used the scientific approach to identify two laws of inheritance Mendel discovered the basic principles of heredity by breeding garden peas in carefully planned experiments Mendel?s Experimental, Quantitative Approach Advantages of pea plants for genetic study:

15_Lecture_Presentation

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Chapter 15 The Chromosomal Basis of Inheritance Overview: Locating Genes Along Chromosomes Mendel?s ?hereditary factors? were genes, though this wasn?t known at the time Today we can show that genes are located on chromosomes The location of a particular gene can be seen by tagging isolated chromosomes with a fluorescent dye that highlights the gene Copyright ? 2008 Pearson Education Inc., publishing as Pearson Benjamin Cummings Fig. 15-1 Concept 15.1: Mendelian inheritance has its physical basis in the behavior of chromosomes Mitosis and meiosis were first described in the late 1800s The chromosome theory of inheritance states: Mendelian genes have specific loci (positions) on chromosomes Chromosomes undergo segregation and independent assortment

APUSH

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PERIOD 4 Case 1: Ideal H-W ? Surviving Genotypes ? AA Aa aa Parental ? 22 ? F1 4 14 4 F2 8 9 5 F3 8 12 2 F4 7 14 1 F5 10 7 5 Freq. of genotypes Freq. of alleles Gen. # p2 (AA) 2pq (Aa) q2 (aa) p (A) q (a) Parental (H-W hypo.) F5 (H-W hypo) F5 (actual) Case 2: Selection against Homozygous Recessive ? Surviving Genotypes ? AA Aa aa Parental ? 22 ? F1 8 14 0 F2 15 7 0 F3 15 7 0 F4 13 9 0 F5 12 10 0 Freq. of genotypes Freq. of alleles Gen. # p2 (AA) 2pq (Aa) q2 (aa) p (A) q (a) Parental (H-W hypo.) F5 (H-W hypo) F5 (actual) Case 3: Heterozygous Advantage ? Surviving Genotypes ?

Hardy Weinberg Answers

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Bio II DiGennaro Hardy-Weinberg Practice Problems A population of rabbits may be brown (the dominant phenotype) or white (the recessive phenotype). Brown rabbits have the genotype BB or Bb. White rabbits have the genotype bb. The frequency of the BB genotype is .35. What is the frequency of heterozygous rabbits? 0.484 What is the frequency of the B allele? 0.59 What is the frequency of the b allele? 0.41 A hypothetical population of 10,000 humans has 6840 individuals with the blood type AA, 2860 individuals with blood type AB and 300 individuals with the blood type BB. What is the frequency of each genotype in this population? AA = 0.684 / AB = 0.286 / BB = 0.03 What is the frequency of the A allele? 0.827 What is the frequency of the B allele? 0.173

Hardy Weinberg Problems

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Bio II DiGennaro Hardy-Weinberg Practice Problems A population of rabbits may be brown (the dominant phenotype) or white (the recessive phenotype). Brown rabbits have the genotype BB or Bb. White rabbits have the genotype bb. The frequency of the BB genotype is .35. What is the frequency of heterozygous rabbits? What is the frequency of the B allele? What is the frequency of the b allele? A hypothetical population of 10,000 humans has 6840 individuals with the blood type AA, 2860 individuals with blood type AB and 300 individuals with the blood type BB. What is the frequency of each genotype in this population? What is the frequency of the A allele? What is the frequency of the B allele?

Hardy Weinberg Practice Problems

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PERIOD 4 Case 1: Ideal H-W ? Surviving Genotypes ? AA Aa aa Parental ? 22 ? F1 4 14 4 F2 8 9 5 F3 8 12 2 F4 7 14 1 F5 10 7 5 Freq. of genotypes Freq. of alleles Gen. # p2 (AA) 2pq (Aa) q2 (aa) p (A) q (a) Parental (H-W hypo.) F5 (H-W hypo) F5 (actual) Case 2: Selection against Homozygous Recessive ? Surviving Genotypes ? AA Aa aa Parental ? 22 ? F1 8 14 0 F2 15 7 0 F3 15 7 0 F4 13 9 0 F5 12 10 0 Freq. of genotypes Freq. of alleles Gen. # p2 (AA) 2pq (Aa) q2 (aa) p (A) q (a) Parental (H-W hypo.) F5 (H-W hypo) F5 (actual) Case 3: Heterozygous Advantage ? Surviving Genotypes ?

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