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alleles - Mahtomedi Middle School
alleles - Mahtomedi Middle School

... Why did the recessive allele seem to disappear in the F1 generation and then reappear in the F2 generation • Mendel realized that organisms have two alleles for every trait. • These two alleles are inherited, one from each parent. • If the offspring receives a dominant allele from one parent, that ...
Punnett Squares
Punnett Squares

... brown cow and the resulting offspring are spotted brown and white (called roan). ...
Punnett Squares
Punnett Squares

Punnett Squares Punnett-Square
Punnett Squares Punnett-Square

... exist (IA, IB, and i), which results in four different possible blood types 3. Hair Color – Too many alleles exist to count ...
Student handout - Inquiry-Based Activities in Genomics and
Student handout - Inquiry-Based Activities in Genomics and

... single individual; before this event, all members of the population were identical with respect to the locus in question. For example, the “wild type” human eye color is brown; all people with blue eyes inherited from a single ancestor a mutation in the OCA2 gene, which directs the synthesis of mela ...
Chapter 23AP Biology
Chapter 23AP Biology

... individuals of one sex (usually the females) are choosy in selecting their mates from the other sex.  In many cases, the female’s choice depends on the showiness of the male’s appearance or behavior. ...
Genetics Brain Twisters Win09
Genetics Brain Twisters Win09

... B) If the F1s were crossed, what would the genotypic and phenotypic ratios of the progeny be? What would this generation be called? ...
Activity 1: Breeding Bunnies In this activity, you will examine natural
Activity 1: Breeding Bunnies In this activity, you will examine natural

... on a genetic level, is a change in the frequency of alleles in a population over a period of time. Breeders of rabbits have long been familiar with a variety of genetic traits that affect the survivability of rabbits in the wild, as well as in breeding populations. One such trait is the trait for fu ...
Intro to Computational Genetics
Intro to Computational Genetics

... • Population genetics (admixture events, recombination events, selection forces, migration patterns) • Potential applications in personalized medicine ...
Evolution of Populations
Evolution of Populations

... 4. How does fossil and biochemical evidence support the evolutionary theory? ...
Unit 7 Genetics - Liberty Union High School District
Unit 7 Genetics - Liberty Union High School District

... • Traits passed in “factors” GENES! from Generation to Generation • Working during the same time period as Darwin • He didn’t know what a GENE was !! ...
File
File

... different combinations of the alleles! This is called the genotype or genetic makeup. Remember that we use letters for the alleles that control the genes and one letter or allele is inherited from each parent. You will be using Zorks, who use the same genetic principles as a pea plant, to see how ge ...
Wanganui High School
Wanganui High School



evolution
evolution

... frequency at the expense of the other. If a species survives and reproduces well in some absolute sense, it will be excluded if a competing species survives and reproduces even ...
Genetics PPT #1
Genetics PPT #1

... Mendel discovered... ...some traits are “masked”...they are RECESSIVE and may skip generations.  ...some traits are DOMINANT...they occur often in the population. ...
Patterns of Inheritance Chapter 12
Patterns of Inheritance Chapter 12

... Extensions to Mendel Polygenic inheritance occurs when multiple genes are involved in controlling the phenotype of a trait. The phenotype is an accumulation of contributions by multiple genes. These traits show continuous variation and are referred to as quantitative traits. For example – human hei ...
Monohybrid cross
Monohybrid cross

... Extensions to Mendel Polygenic inheritance occurs when multiple genes are involved in controlling the phenotype of a trait. The phenotype is an accumulation of contributions by multiple genes. These traits show continuous variation and are referred to as quantitative traits. For example – human hei ...
Mendel’s Peas - rcschools.net
Mendel’s Peas - rcschools.net

Summary of topics Timeline of Mendelian genetics
Summary of topics Timeline of Mendelian genetics

... 0.09, which deviate slightly from the observed values of 0.50, 0.40, and 0.10. Using statistical testing one can show that such a small deviation is well within the range expected with this sample size (the statistical test is termed a chi-square goodness of fit, and is not covered in this course). ...
Bb - Images
Bb - Images

... blue-eyed woman and they have three children, two of whom are brown-eyed and one of whom is blue-eyed. 1) What is the man’s genotype? 2) The woman’s genotype? 3) Draw the Punnett square that illustrates this ...
Chapter 12: PowerPoint
Chapter 12: PowerPoint

... Extensions to Mendel Polygenic inheritance occurs when multiple genes are involved in controlling the phenotype of a trait. The phenotype is an accumulation of contributions by multiple genes. These traits show continuous variation and are referred to as quantitative traits. For example – human hei ...
Ch 11 Notes - Intro to Genetics
Ch 11 Notes - Intro to Genetics

... • Multicellular organisms use mitosis to replace cells that are lost due to injury or damage or to grow. • These cells (somatic cells) are identical to the parent cells because all of the DNA is first copied and then two copies of the DNA separate when the daughter cells ...
Genetics - Biology Junction
Genetics - Biology Junction

... 2 Researchers are tests that can detect particular DNA base sequencing that may be able to identify individuals who may either have a genetic disease or if they are carriers to a particular genetic disease. a. A carrier is a person who does not exhibit traits of the disease, but who has the potentia ...
File - Siegel Science
File - Siegel Science

... Farmers realized thousands of years ago that if you only breed parent plants & animals that have the best characteristics you could produced offspring that also had those favorable characteristics. This practice is referred to as selective breeding…sound familiar? Selective breeding practices have l ...
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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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