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(1) Quantitative traits and sequence variation Lecture objectives
(1) Quantitative traits and sequence variation Lecture objectives

... Approaches for discovering the genetic basis of phenotypic variation ...
Genètica Mendeliana
Genètica Mendeliana

... distinct characteristics (size, seed colour,…), cataloging the results and interpreting them ...
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variation and selection exam questions

... they observed that there are _________________ between the individuals of a species. They also observed that organisms produce more offspring than can possibly _____________to maturity. If the _________ are inherited and give the individuals an advantage over the other members of the species, they w ...
Honors Biology Semester 2 Final Exam Review
Honors Biology Semester 2 Final Exam Review

... 3. There are 100 students in a class. Ninety-six did well in the course whereas four blew it totally and received a grade of F. Sorry. In the highly unlikely event that these traits are genetic rather than environmental, if these traits involve dominant and recessive alleles, and if the four (4%) re ...
The Hardy-Weinberg Equilibrium Lab
The Hardy-Weinberg Equilibrium Lab

... offspring. (Index cards represent genes. Students may need to return to the gene pool to select index cards that represent the genes of the new generation. 8. Have students return to their seats. 9. Count the number of each of the possible genotypes (AA, Aa, and aa) that occurred in the second gener ...
Populations Evolve!
Populations Evolve!

... alleles in & out of populations seed & pollen distribution by ...
Natural Selection and Evolution
Natural Selection and Evolution

... exchange genetic material – Occur if, for example, one organism moves from one place to another. If the characteristics of the newcomer differ from the native organisms and it adapts well and mate successfully, the genetic composition of the population will be altered ...
Directed Reading 17.2 - Blair Community Schools
Directed Reading 17.2 - Blair Community Schools

... _____ 1. genetic equilibrium a. the movement of alleles into and out of a population _____ 2. gene flow b. one of the most powerful agents of genetic change _____ 3. nonrandom mating c. eliminates individuals with average phenotype values _____ 4. genetic drift d. a change in allele frequency becaus ...
Genetic Change - Minneota Public Schools
Genetic Change - Minneota Public Schools

... a. the movement of alleles into and out of a population 2. gene flow b. one of the most powerful agents of genetic change 3. nonrandom mating c. eliminates individuals with average phenotype values 4. genetic drift d. a change in allele frequency because of random occurrences 5. mutation e. the stat ...
Microevolution - Fulton County Schools
Microevolution - Fulton County Schools

... • Natural Selection: changes in environmental pressures can cause an increase or decrease in certain alleles (traits) in a population – Favorable alleles stay in population (selected for) – Unfavorable alleles are eliminated (selected against) ...
If your cell phone is being used for ANY other reason
If your cell phone is being used for ANY other reason

... and digestive tract. 19. Mental retardation can be prevented with this disorder if a special diet is used on the infant affected. 20. A rare dominant disorder that leads to deterioration of areas of the brain. ...
LE#25Genetics - Manhasset Public Schools
LE#25Genetics - Manhasset Public Schools

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AP Biology Ch 21 Notes

... -total collection of genes in a population at any one time - all alleles at all gene loci in all individuals of a population - if all members of a population are homozygous for the same allele, the allele is said to be fixed in the gene pool - usually, however, there are 2 or more alleles for a gene ...
Mendel and the Gene Idea
Mendel and the Gene Idea

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Conditions for extinction of some lethal alleles of X-linked

... Conditions for extinction of some lethal alleles of X-linked genes Some lethal alleles of certain genes can cause the death of the organisms that carry them. Some of these alleles, as could be that responsible of hemophilia, correspond to genes linked to sex chromosomes, especially to X chromosome. ...
Unit 1: Part I: Understanding Biological inheritance
Unit 1: Part I: Understanding Biological inheritance

... Include: monohyb rid cross, dihybrid cross, testcross, P generatio n , F1 generatio n , ...
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The fitness consequences of population size and genetic

... determining organismal fitness, as well as the variation in lifespan and ageing documented within natural populations. Such large variation in rates of aging found across one species, suggests that ageing and lifespan are rather plastic traits, which can evolve over short evolutionary time spans. In ...
Work of Gregor Mendel
Work of Gregor Mendel

...  The offspring of the P generation are called the F1 generation  The offspring of the F1 generation are called the F2 generation  Hybrid—the offspring of crosses between parents with different traits ...
7-2.5 Standard Notes
7-2.5 Standard Notes

... 7-2.5 Summarize how genetic information is passed from parent to offspring by using the terms genes, chromosomes, inherited traits, genotype, phenotype, dominant traits, and recessive traits. It is essential for students to know that offspring may have the same physical characteristics, or traits, a ...
Chapter 23: Microevolution
Chapter 23: Microevolution

... genetic bottlenecks are created by dramatic reduction in population size – endangered species face a genetic bottleneck on a species-wide scale, and suffer lasting effects even if population size later recovers founder effect – when a new population is established, typically only a few individuals ( ...
Heredity
Heredity

... parents have brown hair and so do you * Heredity is not always this simple. You might have blue eyes even though both of your parents have brown eyes ...
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Patterns of Inheritance Chp 10

... Skin color is a polygenic trait; it is affected by more than one gene. ...
Biol 467 Evolution Study Guide 2 p 1 1) Describe and contrast the
Biol 467 Evolution Study Guide 2 p 1 1) Describe and contrast the

... the context of the founder effect of genetic drift. 19) What are the effects of inbreeding? 20) Phenotypic traits and genotype frequencies that we observe in nature may have arisen by several mechanisms other than by selection. Outline several methods that are available to measure selection or infer ...
Ch 12: Patterns of Heredity and Human Genetics
Ch 12: Patterns of Heredity and Human Genetics

... o Does not occur until 30-50 years of age so this is why it can be passed along o There is a genetic test that can test the presence of the allele…would you want to know? Complex Patterns of Heredity o Most traits are not simply dominant or recessive 1. Incomplete dominance: when neither allele for ...
Gregor Mendel Power Point File
Gregor Mendel Power Point File

... Why pea plants??? There was a long-standing tradition of breeding pea plants at the monastery where Mendel lived and worked ...
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Inbreeding

Inbreeding is the sexual reproduction of offspring from the mating or breeding of individuals or organisms that are closely related genetically. By analogy, the term is used in human reproduction, but more commonly refers to the genetic disorders and other consequences that may arise from incestuous sexual relationships and consanguinity.Inbreeding results in homozygosity, which can increase the chances of offspring being affected by recessive or deleterious traits. This generally leads to a decreased biological fitness of a population (called inbreeding depression), which is its ability to survive and reproduce. An individual who inherits such deleterious traits is referred to as inbred. The avoidance of such deleterious recessive alleles caused by inbreeding, via inbreeding avoidance mechanisms, is the main selective reason for outcrossing. Crossbreeding between populations also often has positive effects on fitness-related traits.Inbreeding is a technique used in selective breeding. In livestock breeding, breeders may use inbreeding when, for example, trying to establish a new and desirable trait in the stock, but will need to watch for undesirable characteristics in offspring, which can then be eliminated through further selective breeding or culling. Inbreeding is used to reveal deleterious recessive alleles, which can then be eliminated through assortative breeding or through culling. In plant breeding, inbred lines are used as stocks for the creation of hybrid lines to make use of the effects of heterosis. Inbreeding in plants also occurs naturally in the form of self-pollination.
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