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Profile Documents Logout
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Introduction to Genetics
Introduction to Genetics

... Example…tall or short. ...
File - Mrs. Lorenz`s Science Class
File - Mrs. Lorenz`s Science Class

... The Hardy-Weinberg Principle states that allele frequencies in a population should remain constant unless one or more factors cause those frequencies to change. These factors include: non-random mating, small population size, immigration or emigration, mutations, and natural selection. Populations a ...
Chapter 17: Population Genetics and Speciation Section 1: Genetic
Chapter 17: Population Genetics and Speciation Section 1: Genetic

... for species B. Definition depends on organisms and field of science being studied C. Generally defined as a group of natural populations that can interbreed and produce fertile offspring ...
Chapter 11
Chapter 11

File 1-intro to genetics 2012 ppt
File 1-intro to genetics 2012 ppt

... alleles (XX) for these genes, but males only receive one (y). When doing a Punnett Square, use large X's and Y's to denote male and female, use superscript letters to designate the alleles. – Ex. hemophilia (bleeding) and color blindness are recessive sex-linked traits (XcXc or XcY). ...
Genes Within Populations
Genes Within Populations

... • Natural selection is not the only process that can lead to the genetic makeup of populations • Allele frequencies can also change as the result of repeated mutations from one allele to another and from migrants bringing alleles into a population • In small populations, the frequencies of alleles c ...
Multiple Alleles
Multiple Alleles

... to determine the genotype of ONE of these plants. In your cross, you obtain progeny with the following phenotypes. 25% produce round yellow seeds, 25% produce round green seeds, 25% produce wrinkled yellow seeds, and 25% produce wrinkled green seeds. (a) Describe the cross you performed to determine ...
PP - Cloudfront.net
PP - Cloudfront.net

... Law of Independent Assortment Applies to different traits, therefore 2 different sets of alleles The dihybrid cross is the typical example. Law of Independent Assortment: Alleles of different traits will separate and assort themselves independently of each other. The alleles are put into the gamete ...


... These questions reflect the common misconception that the dominant allele of a trait will always have the highest frequency in a population and the recessive allele will always have the lowest frequency. On the contrary, as G. H. Hardy stated in 1908, "There is not the slightest foundation for the i ...
Notes Chapter 16 The Evolution of Populations and Species
Notes Chapter 16 The Evolution of Populations and Species

...  Traits vary and can be mapped along a bell curve, which shows that most individuals have average traits, while a few individuals have extreme traits.  Variations in genotype arise by mutation, recombination, and the random fusion of gametes.  The total genetic formation available in a population ...
Mendel`s Laws of Heredity
Mendel`s Laws of Heredity

... Mendel’s Laws of Heredity – Chp 10.1 Why we look the way we look... ...
Past_Months_files/Ch 11 Summaries
Past_Months_files/Ch 11 Summaries

... ▶ Fertilization is the process in which reproductive cells (egg from the female and sperm from the male) join to produce a new cell. ▶ A trait is a specific characteristic, such as (in peas) seed color or plant height. ▶ Mendel prevented self-pollination in the peas. He controlled fertilization so h ...
Microevolution
Microevolution

...  polymorphism: subpopulations of different forms – genetic polymorphism = ex. blood types in humans & coat color in Labrador retrievers – phenotypic polymorphism = ex. shells of snail populations Phenotypic polymorphism ...
Genetics[1] - Turner
Genetics[1] - Turner

... causing 4 or more phenotypes of a trait to exist • KEEP IN MIND ▫ There may be multiple alleles within the population, but individuals have only two of those alleles  Why? …because individuals have only two biological parents. We inherit half of our genes (alleles) from mommy, & the other half from ...
Mendel and Heredity
Mendel and Heredity

... that makes a protein necessary to pump chloride into and out of cells. The airways of the lungs of these individuals become clogged with thick mucus, and the ducts of the liver and pancreas become blocked. Treatments can relieve some of the symptoms, but there is no cure for this disorder. (1) For e ...
Hardy-Weinberg Equilibrium
Hardy-Weinberg Equilibrium

... HW Model Second Prediction  Allele ...
Card review
Card review

... 32. Cystic fibrosis is an autosomal recessive disorder in which the gene that codes for chloride channel proteins is mutated making the cell unable to transport chloride ions correctly from the cytosol to the extracellular fluid. The diagrams below show the normal and CFTR mutant transport proteins ...
Introduction to Genetics using Punnett Squares
Introduction to Genetics using Punnett Squares

... were either violet or white, Mendel began to study how traits were inherited. ...
Chapter 9 Study Guide
Chapter 9 Study Guide

... 22. In heterozygous individuals, only the _______________ allele achieves expression. 23. Meiosis results in one diploid cell dividing into ____________________________ 24. Mitosis results in one diploid cell dividing into __________________________ 25. 2 factors that play a role in ones characteri ...
Evolutionary Concepts: Variation and Mutation
Evolutionary Concepts: Variation and Mutation

... • No net change in allele frequencies due to mutation • Members of the population mate randomly • New alleles do not enter the population via immigrating individuals • The population is large • Natural selection does not occur ...
Genetics
Genetics

pedigree - Mrs. Salmon Science
pedigree - Mrs. Salmon Science

... Springboard ...
Ch. 14: Genetics and Heredity
Ch. 14: Genetics and Heredity

Genetics Lecture III
Genetics Lecture III

... F1 Generation Cross Tt x Tt Cross ...
Chapter 11 Section Review Answer key
Chapter 11 Section Review Answer key

... 2. A trait controlled by a dominant allele will be produced if there are two dominant alleles present or one dominant allele and one recessive allele. 3. A trait controlled by a recessive allele will be produced only when two recessive alleles are present. 4. Segregation is the process during gamete ...
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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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