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2-Mohybrid Crosses
2-Mohybrid Crosses

... • The trait for blood type is an example of multiple alleles. A , B, and O are the alleles that affect blood type. • No matter how many alleles affect a characteristic one individual can only have 2 alleles at one time, – for example, ABO are all alleles for blood types but an individual can only ha ...
Chapter 23: Patterns of Gene Inheritance
Chapter 23: Patterns of Gene Inheritance

... intermediate condition called sickle-cell trait. Heterozygotes have an advantage in malaria-infested Africa because the pathogen for malaria cannot exist in their blood cells. This evolutionary selection accounts for the prevalence of the allele among African Americans. ...
The Principle of Segregation
The Principle of Segregation

... • The two alleles that make up each gene may be the same or different. • If the alleles are the same they are called homozygous • If the alleles are different they are called heterozygous ...
Evolution of Populations
Evolution of Populations

... Effect of chance is different from population to population Small populations are effected by genetic drift more often than larger ones Given enough time, even in large populations genetic drift can have an effect Genetic drift reduces variability in populations by ...
Ch. 8 Heredity
Ch. 8 Heredity

... Mendel studied specific traits Crossed 2 plants with different expressions of that trait New plants all looked like one of the 2 parents New plants called hybrids = received different genetic information (Diff. Alleles) for a trait from each plant 2. Organism that always produces the same trait gene ...
DISRUPTING GENETIC EQUILIBRIUM
DISRUPTING GENETIC EQUILIBRIUM

... II. Migration/ Gene Flow ...
NB 100:Heredity
NB 100:Heredity

... Heredity Notes 4/9/12 Genes & Alleles Genes – factors that control traits Ex: Earlobe type; pea plant height Alleles – different forms of a gene Ex: Free lobes, attached lobes; tall plant, short plant ...
What creates variation in the offspring of sexually reproducing
What creates variation in the offspring of sexually reproducing

... Chromosomes stick together and are often ...
discov5_lecppt_Ch18
discov5_lecppt_Ch18

... individuals established a new population far from existing populations ...
Genetics Notes
Genetics Notes

... your father gives you the gene for having two eye brows (dominant) Dad ...
Grade 11 Genetics Review
Grade 11 Genetics Review

... b) to produce multiple copies of genes for mass production c) to produce multiple copies of genes for further research d) to produce identical cells to treat disease e) to repopulate endangered species 5. What are haploid and diploid cells? Where is each cell type found? 6. Describe what the terms d ...
Genetics - My Teacher Pages
Genetics - My Teacher Pages

... Since a living thing has two copies of each gene, it can have two different alleles of it at the same time. Often, one allele will be dominant, meaning that the living thing looks and acts as if it had only that one allele. ...
Mendelian Genetics in Populations – 1
Mendelian Genetics in Populations – 1

... favors yellowflowered plants when they are rare but not when they are common ...
Incomplete Dominance, Codominance, and Multiple Alleles (Fill in
Incomplete Dominance, Codominance, and Multiple Alleles (Fill in

... Stop using the word bank here.  If you feel comfortable you can complete  Q1 or you can wait until I give you directions.  Q1.  If you cross a two pink flowers, is it possible to produce a white  ...
7.1 The Inheritance of Traits Offspring resemble their parents, but not
7.1 The Inheritance of Traits Offspring resemble their parents, but not

... Phenotype: physical traits of an individual Genotype: description of the alleles for a particular gene in an individual § Homozygous (-ote): both alleles for a gene are identical § Heterozygous (-ote): the gene has two different alleles Recessive: the phenotype of an allele is seen only when homoz ...
Quiz: Punnett Squares
Quiz: Punnett Squares

... two alleles. The dominant allele (W) codes long whiskers & the recessive allele (w) codes for short whiskers. a. What percentage of offspring would be expected to have short whiskers from the cross of two long-whiskered Persian cats, one that is homozygous dominant and one that is heterozygous? ...
1 I. INTRODUCTION TO CROP EVOLUTION AND DOMESTICATION
1 I. INTRODUCTION TO CROP EVOLUTION AND DOMESTICATION

Fundamentals of Genetics
Fundamentals of Genetics

... alleles are present; represented with capital letter Recessive Allele – form of gene that is not expressed when paired with a dominant allele; represented with lower case letter ...
Meiosis to the Punnett Square
Meiosis to the Punnett Square

... For instance, a heterozygous haired(Bb), and homozygous recessive eyed(ee) parent would be Bbee.  Through meiosis, there would be 4 possible allele combinations in the sex cells. ...
Dark Blue with Orange
Dark Blue with Orange

... Gene is a segment of DNA on a chromosome that controls a particular hereditary trait. Alleles are the different types of characteristics the gene can express. These alleles are represented by letters. G = capital means dominant g = lower case means recessive ...
2 cp u9 inheritance notes
2 cp u9 inheritance notes

... daughters will have it, but ______ of them are likely to be carriers. ...
File
File

SCI24TutDec2
SCI24TutDec2

... Factors for any trait. The actual letter can change, depending on what is Being recorded, but the use of capital and lower-case letters is consistent. For Any trait, an individual likely has one of the following pairs: DD – two dominant factors. dd- two recessive factors. Dd – one dominant gene and ...
Unit 2
Unit 2

... Using the two Punnett squares, how would a breeder know if the unknown parent is homozygous dominant or heterozygous? ...
Section 5-1
Section 5-1

... The scientific study of traits pass from one generation to the next was done by Gregor Mendel Mendel’s background in science and math helped him with his studies of genetics Mendel studied the inheritance of traits in pea plants Mendel is known as the “Father of Genetics” ...
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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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