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Feb 15 - 16: DR Chapter 5 Genetics
Feb 15 - 16: DR Chapter 5 Genetics

... _____ 18. What results did Mendel get when he allowed the first-generation plants to self-pollinate? a. half purple and half white offspring b. every fourth plant had white flowers c. every fourth plant had purple flowers d.offspring with all purple flowers _____ 19. When a relationship between two ...
Chapter 12: Patterns of Inheritance
Chapter 12: Patterns of Inheritance

... the first six months of life. Then, as nerve cells become distended with gangliosides, a relentless deterioration of mental and physical abilities occurs. The child becomes blind, deaf, and unable to swallow. Muscles begin to atrophy and paralysis sets in. Death usually occurs before the age of 4 or ...
Mendelian Genetics Problems
Mendelian Genetics Problems

... offspring would you expect to be affected? 6. Many animals and plants bear recessive alleles for albinism, a condition in which homozygous individuals lack certain pigments. An albino plant, for example, lacks chlorophyll and is white, and an albino human lacks melanin. If two normally pigmented per ...
Meiosis/ Genetics Study Guide*Test Wednesday 2/ 22/12
Meiosis/ Genetics Study Guide*Test Wednesday 2/ 22/12

... passed independently of one another from parents to offspring. That is, the biological selection of a particular gene in the gene pair for one trait to be passed to the offspring has nothing to do with the selection of the gene for any other trait. More precisely the law states that alleles of diffe ...
Chapter 11: Introduction to Genetics
Chapter 11: Introduction to Genetics

Name - The Biology Corner
Name - The Biology Corner

... a. _____ A cross between a red flower and a white flower results in all offspring have pink flowers. b. _____ In a genetic cross, both parents contribute equally to the offspring. c. _____ Parents of contrasting appearance always produce offspring of intermediate appearance. Collectively, these conc ...
Variations to Mendel`s First Law of Genetics
Variations to Mendel`s First Law of Genetics

... example DD is homozygous dominant and dd is homozygous recessive; pure lines are homozygous for the gene of interest Heterozygote - an individual which contains one of each member of the gene pair; for example the Dd heterozygote Genotype - the specific allelic combination for a certain gene or set ...
Pedigrees Power Point
Pedigrees Power Point

... • Pedigree= a family history that shows how a trait is inherited over several generations ...
Pedigree Analysis
Pedigree Analysis

Polygenic Traits
Polygenic Traits

AP Biology Exam Review: Genetics, Evolution, and Classification
AP Biology Exam Review: Genetics, Evolution, and Classification

... different chromosomes. The frequency of recombination of linked genes due to crossing over increases if two genes are farther apart on the chromosome  We can create a linkage map shown the location of genes on a chromosome. The distance between genes is measured in map units. 1 map unit = 1% recomb ...
Mendelian Genetics
Mendelian Genetics

... appear when plants were crossed. The first generation offspring are called the F1 generation. The second generation offspring are called the F2 generation. Dominant traits are observed in the organism’s characteristics if present. Recessive traits are traits that are hidden if the dominate trait is ...
BSC 2011 POPULATION GENETICS 1. A survey of the peppered
BSC 2011 POPULATION GENETICS 1. A survey of the peppered

... 8. Phenylketonuria (PKU) results in a form of mental retardation that is caused by an autosomal recessive allele. (a) If 1 in 10,000 newborn Caucasians have PKU, what fraction of the Caucasian population is a carrier for the trait (assuming a HardyWeinberg equilibrium)? (b) In part (a) you were tol ...
powerpoint lesson oedigrees karyotypes
powerpoint lesson oedigrees karyotypes

... Tut was married to his sister. King Tut had several obvious disorders, likely due to double doses of recessive alleles from his brother/sister parents: Cleft palate, club foot, severe scoliosis, other bone disease Tut’s own two children were still-born. ...
Review Guide Ch. 11
Review Guide Ch. 11

... phenotype which is totally different from both parents. This is an example of _____________________. 18. A situation in which a gene has more than 2 alleles is known as ______________________. 19. Blood type AB is an example of ___________________ (11-3 notes from today). 20. In fruit flies, multipl ...
Population Genetics
Population Genetics

... Genetic drift = the alteration of the gene pool of a small population due to chance. Two factors may cause genetic drift: a) Bottleneck effect may lead to reduced genetic variability following some large disturbance that removes a large portion of the population. The surviving population often does ...
Mechanisms for Evolution
Mechanisms for Evolution

... • Each population shares a gene pool (the different alleles present in the population) • Each population has a relative frequency of each allele, or the number of times the allele occurs in the gene pool. • The frequency of alleles in a population tends not to change unless there is an outside force ...
mechanisms of evolution: genetic variation
mechanisms of evolution: genetic variation

... species Variation within a species is the result of the variety & random recombination of alleles possessed by individuals Results in a high degree of genetic diversity within most populations ...
Pigeon Genetics Worksheet (Answer)
Pigeon Genetics Worksheet (Answer)

Galloway Breed Structure, Colors and Patterns
Galloway Breed Structure, Colors and Patterns

... The belt can also have spots of color within it. This is also most likely due to independent modifiers. The spotting can vary in extent, but the modifiers must be there for the spots to be. Most modification of belts is probably genetic, and therefore subject to selection. That means that by selecti ...
13) PHENOTYPE: the set of observable characteristics of an
13) PHENOTYPE: the set of observable characteristics of an

Genetics
Genetics

... • The pieces are placed in wells at the top of a gel and electricity is run through it • A standard with known DNA sizes is placed in at least one well to compare • The different sized fragments (measured in number of base pairs) stop at certain points and the unknown is compared with the known ...
I. Mendel`s postulates Postulate 1. Unit factors in pairs Postulate 2
I. Mendel`s postulates Postulate 1. Unit factors in pairs Postulate 2

... • based on the idea that: in a dihybrid, the two traits sort INDEPENDENTLY of one another • i.e. what happens with one trait is completely unrelated to what happens with the other trait ...
File
File

... Compared to the individuals in generation I, are the individuals in generation III: children, parents, grandchildren or siblings? ...
Genetics - Cloudfront.net
Genetics - Cloudfront.net

... from parent to child • Patterns of relatedness can help predict offspring characteristics ...
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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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