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CONΣERV IT 1.0 - Student manual
CONΣERV IT 1.0 - Student manual

... -Relative fitness of the three genotypes -number of iterations is fixed -all selection forces are optional, but can also be used together. The output are line graphs showing the change in the mean fitness and gene frequencies with generations of the lake population. There was once a small landlocked ...
File
File

... 11. What is the phenotypic ratio that results from a dihybrid cross between two organisms that are heterozygous for both traits? See Figure 6. 17 for heip. ...
Document
Document

... If most nonsynonymous substitutions are adaptive, then they will increase in frequency and be fixed more rapidly than neutral alleles. ...
Notes 5.2 Studying Genetic Crosses
Notes 5.2 Studying Genetic Crosses

... Test Crosses: Determining the Genotype of a Parent That Has a Dominant Phenotype. To determine the genetic make up of an individual that expresses dominant traits (phenotype), but the genotype is unknown, a test cross is performed to determine the genotype. The unknown genotype is crossed with a hom ...
Chapter 8 - Lamar County School District
Chapter 8 - Lamar County School District

... • Law of Segregation: two alleles for a trait segregate (separate) when gametes are formed (remember, first chromosomes are separated in anaphase I, then the actual chromatids are split at the centromere in anaphase II?) • Law of Independent Assortment: the alleles of different genes separate indepe ...
Genetics - My CCSD
Genetics - My CCSD

...  An uppercase letter denotes the wild type (usual, dominant) form of the gene  A lowercase letter denotes the mutant (unusual, recessive) form of the gene  There are three distinct combinations; e.g. TT,Tt, and tt  If a dominant gene is paired with a recessive gene, the dominant's trait will usu ...
Chapter 12 - Cloudfront.net
Chapter 12 - Cloudfront.net

... the recessive allele (Rr) - 1 in 2500 white kids born with it Tay-Sachs  common in Amish people and Jewish people from eastern Europe Phenylketonuria  common in descendants of Norway and Sweden  ...
Hardy-Weinberg Practice Problems When Allele Frequencies Are
Hardy-Weinberg Practice Problems When Allele Frequencies Are

... 7. If 9% of an African population is born with a severe form of sickle-cell anemia (ss), what percentage of the population will be resistant to Malaria because they are heterozygous (Ss) for the sickle-cell gene? ...
Genetics Review Who is the
Genetics Review Who is the

... characteristics are passed on from one generation to the next. ...
heredity article and questions
heredity article and questions

... the parent plants could be predicted to occur in a certain percentage of the offspring. Traits like plant height, blossom color, color of peas, and whether the peas were wrinkled or smooth appeared to be passed down from the parent plant to the offspring. Mendel did not know about DNA or chromosomes ...
Evolution at Multiple Loci
Evolution at Multiple Loci

... (between sister alleles on other chromosome). • The effect of an allele depends upon what it is paired with. • Because of this dependence, the outcome of dominance variation is not entirely predictable - it is context dependent. • This context disappears every generation because of meiosis. The pair ...
Mendel`s Work - Riverdale Middle School
Mendel`s Work - Riverdale Middle School

... Mendel’s P generation plants were purebred, meaning they had two of the same alleles. (TT) = “purebred tall” (tt)= “purebred short” The F1 offspring received one allele from each parent making the allele combination: (Tt) A hybrid is an organism that has both the dominant and the recessive allele fo ...
3 slides
3 slides

... 2) Genetic drift tends to increase genetic variability between populations (Red, Blue, Green → Red, Blue OR Red, Green OR etc...) Special Cases of Genetic Drift: 1) Population Bottleneck: Population undergoes a dramatic reduction in size ...
Genetics notes
Genetics notes

Genotype - workingalonestinks
Genotype - workingalonestinks

... Definition: An allele is an alternative form of a gene (one member of a pair) that is located at a specific position on a specific chromosome. F- For my slide show this will be considered the dominant allele which mean that if a child has this as one of its two alleles then they will most definitely ...
File - fiserscience.com
File - fiserscience.com

... a: © Y. Arthus-Bertrand/Peter Arnold, Inc.; b: © Neil McIntre/Getty Images ...
Name: Date: Period: _____ Unit 10, Part 2 Notes: Genetic Variation
Name: Date: Period: _____ Unit 10, Part 2 Notes: Genetic Variation

... 14. As a result of these four mechanisms, we typically see a range of phenotypes for a particular trait within a population. For example, let’s say the graph to the right shows the frequency of mice with various fur colors (white  tan  brown). In this population, it appears that tan is the most co ...
ws addl HW prob+key ans
ws addl HW prob+key ans

... 10. In the disease Sickle-cell anemia normal homozygous individuals (SS) have normal blood cells that are easily infected with the malarial parasite. Thus, many of these individuals become very ill from the parasite and many die. Individuals homozygous for the sickle-cell trait (ss) have red blood c ...
Genetics Practice III
Genetics Practice III

... 3. The X-linked barred locus in chickens controls the pattern of the feathers, with the alleles B for barred pattern and b for no bars. If a barred male (XB Y) is mated to a nonbarred female (Xb Xb), what will be the appearance of the male and female progeny? ...
Dihybrid Cross Questions
Dihybrid Cross Questions

... allele. What is the likelihood that their children will be colour-blind? Carriers of the trait? Show your work using a Punnett square. 4. Male pattern baldness is inherited on the X chromosome. The allele for baldness is designated X b, while the allele for normal hair pattern is X. Neither of your ...
A. FF B. Ff C. ff
A. FF B. Ff C. ff

... Master ID: 25916 Revision: 1 Correct: D Rationale: A. Student(s) may have mixed up the terms "dominant" and "recessive," incorrectly thinking recessive alleles are usually written with capitalized letters. Student(s) may have believed that two dominant alleles cancel each other out. B. Student(s) ma ...
Genetics and Genomics in Medicine Chapter 5 Questions Multiple
Genetics and Genomics in Medicine Chapter 5 Questions Multiple

... An individual single gene disorder can show different levels of genetic heterogeneity, and different mutations in a single gene can sometimes result in a very wide range of different phenotypes. Which, if any, of the following statements, is false? a) Allelic heterogeneity describes a situation wher ...
Genetics
Genetics

... to self-pollinate. The offspring of an F1 cross are called the generation. ...
Genetics Powerpoint
Genetics Powerpoint

... (AS A SCIENCE) ...
Mendelian Genetics Mono and Dihybrid Crosses, Sex
Mendelian Genetics Mono and Dihybrid Crosses, Sex

... plants that produce offspring of the same variety when they self-pollinate ...
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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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