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Genetics and Mendel
Genetics and Mendel

... Right now there are three known gene pairs that control eye color. The bey 2 gene on chromosome 15 contains a brown and blue allele. Also on chromosome 15, the bey 1 gene is the central brown gene. On chromosome pair 19 the gey gene contains a green allele and a blue allele. A green allele is domina ...
I. Heredity Vocabulary - Parkway C-2
I. Heredity Vocabulary - Parkway C-2

... Mendel concluded that something inside the plant controlled which of the two traits appeared, he called it a factor. What Mendel called a factor, we call a _____________________. ...
Allele Frequency Allele frequency
Allele Frequency Allele frequency

... Relationship between Allelic Frequency and Genotype Frequency  What are the chances of two heterozygotes mating and having a child with a recessive trait? • If 1 in 10,000 members of the population have the disorder, then 1 in 50 is a heterozygote • Chance of two mating is 1/50 x 1/50 = 1/2,500 • ...
File - CAPE Biology Unit 1 Haughton XLCR 2013
File - CAPE Biology Unit 1 Haughton XLCR 2013

... • Genes, like to play around and express different phenotypes in progeny. • It is very difficult understanding genes at times. • Most often we observe complete dominance, where one allele completely takes over another allele. ...
91608Handout
91608Handout

... What is the function of a centromere? ...
2005 Biology: Describe the transfer of genetic information (90163)
2005 Biology: Describe the transfer of genetic information (90163)

... That the different sequences give different characteristics such as the flower colour. Red and white are different sequences of bases giving different alleles of the same gene. ...
Chapter 20 slides
Chapter 20 slides

... No genes are transferred to or from other sources (no immigration or emigration takes place) Random mating is occurring Size of population is very large No selection occurs Since no change in genotype proportions therefore also known as Hardy-Weinberg equilibrium ...
Applying Mendel`s Principles Power Point
Applying Mendel`s Principles Power Point

... crossed the F1 plants to produce F2 offspring. • This produced offspring ...
16-2 Evolution as Genetic Change
16-2 Evolution as Genetic Change

... A. Evolution never acts directly on genes. Why? 1. It is entire organisms that either live or die a. If an individual dies without reproducing, it does not contribute its alleles to the population’s gene pool. b. If an individual produces many offspring, its alleles stay in the gene pool and may inc ...
Hardy-Weinberg Homework  FALL 2014 Due in class on 9/24
Hardy-Weinberg Homework FALL 2014 Due in class on 9/24

population
population

... respond to their subspecies song. ...
Chapter 16: Evolution of Populations
Chapter 16: Evolution of Populations

... respond to their subspecies song. ...
Multiple Choice Review – Mendelian Genetics
Multiple Choice Review – Mendelian Genetics

... genes, one of each allele. b. The result of a hybrid cross; they contain two genes for each trait, both carrying the recessive allele. c. The result of a hybrid cross; they contain two genes for each trait, both carrying the dominant allele. d. The result of crossing two true breeding plants; they c ...
Inheritance
Inheritance

... chromosome are called sex-linked or X-linked traits. • Because males only have one X chromosome they are affected by recessive X-linked traits more than females. • In females the other X-chromosome will often mask the effect of the recessive trait. ...
Unit_18_Mendelian_Genetics (2)
Unit_18_Mendelian_Genetics (2)

... Mendel would predict that ¾ would be ...
wk10_Inheritance_Lisa.bak
wk10_Inheritance_Lisa.bak

... What gametes can these parental flowers make? ...
Chapter 10
Chapter 10

... Ex. short allele and short allele, written as _____.  ________________: inherits two different alleles from the parents for a particular gene. Ex. tall allele and short allele, written as _____. ...
AP Exceptions to Mendel
AP Exceptions to Mendel

... Some single alleles have more than one distinguishable phenotypic effect - This is called pleiotropy. An example is the coloration pattern and crossed eyes of Siamese cats, which are both caused by the same allele. These unrelated characters are caused by the same protein produced by the same allele ...
PowerPoint
PowerPoint

Mendel`s Laws of heredity
Mendel`s Laws of heredity

... 1. Mendel crossed purpleflowered plants with whiteflowered plants 2. Mendel planted the seeds, then allowed the F1 plants to self-fertilize 3. The resulting offspring F2 showed a 3:1 ratio of purple flowers ...
16-2 Evolution As Genetic Change
16-2 Evolution As Genetic Change

... Key Concept: In Small Populations, Individuals That Carry A Particular Allele May Leave More Descendents Than Other Individuals, Just By Chance. Over Time, A Series Of Chance Occurrences Of This Type Can Cause An Allele To Become Common In A Population ...
meiosis_10
meiosis_10

... Population genetics is the study of the entire pool of genetic diversity within a population. This is greater than the genetic diversity shown by one individual In population genetics, scientists measure and predict changes in allele and genotype frequency from generation to generation Studying it a ...
Unit 6 Genetics and Heredity
Unit 6 Genetics and Heredity

... • What causes genetic disorders? – DNA mutation (usually recessive) or chromosome abnormalities (in # or structure) that cause the production of abnormal proteins ...
Genetics Review Lectures 1-4
Genetics Review Lectures 1-4

... Mendel figured out the rules of genetics by working with pea plants. Why were these plants a good tool for Mendel to use to answer his questions about inheritance? 1. Individual plants could be self-fertilized or crossfertilized with other individuals. 2. They grew quickly (short generation time). ...
Genetics 2. probability calc.notebook
Genetics 2. probability calc.notebook

... Traits are determined by  Factors (genes) that are passed from  parents to offspring in their sex cells.   Some traits are dominant other are recessive ( F1) from Pure or  homozygous cross  • Most traits are controlled by 2 genes one from each parent.  They segregate  and recombine as gametes form ( ...
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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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