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8/28 Mendel
8/28 Mendel

... genetic factors. • Conclusion 2: Two genetic factors (alleles) separate when gametes are formed. • Conclusion 3: The concept of dominant and recessive traits. • Conclusion 4: Two alleles separate with equal probability into the gametes. ...
Lecture Notes in Population Genetics
Lecture Notes in Population Genetics

... (AA or AO), B (BB or BO), O (OO) and AB (AB). The alleles A and B produce proteins which can cause dangerous immune reactions if blood containing that protein is given in a transfusion to an individual who does not have that protein. Thus an AB could receive blood from anyone without worrying about ...
asdfs - Jefferson County Public Schools
asdfs - Jefferson County Public Schools

... = An allele that MASKS the presence of another allele Red and white flowers producing pink offspring is an example of Incomplete dominance _______________________ Codominance ...
BIO212lec04APR2012
BIO212lec04APR2012

... •  Duplication of small pieces of DNA increases genome size and is usually less harmful •  Duplicated genes can take on new functions by further mutation •  An ancestral odor-detecting gene has been duplicated many times: humans have 1,000 copies of the gene, mice have 1,300 ...
Random Genetic Drift
Random Genetic Drift

... 2. On average AMONG a group of populations, RGD INCREASES genetic variation: A) RGD makes different populations genetically more different from one another. 3. GENETIC FIXITY of SPECIES is NOT possible as long as there are a lot of populations, because RGD will do something different in each populat ...
Introduction to Biological Anthropology: Notes 7
Introduction to Biological Anthropology: Notes 7

... − a copy of the journal with Mendel’s article was among Darwin’s papers at his death − but the folded edges of the pages had to be cut to read the journal − some other articles were cut open… but Mendel’s wasn’t − the answer was there on his desk, but Darwin never read it. − so Mendel’s findings wer ...
What Causes Phenotypic Variation Among Individuals
What Causes Phenotypic Variation Among Individuals

... Response (R) = mean Zoffspring – mean Zparents next generation Mean phenotypic trait ...
Problems for 3505 (2011) 1. In the simplex of genotype distributions
Problems for 3505 (2011) 1. In the simplex of genotype distributions

... case of additive fitness (wij,kl = aik + bjl , aik = aki , bjl = blj ) the average fitness function and allele frequencies in the next generation do not depend on r. Which theorem can then be used for an analysis? The following 3 questions are taken from the exam 2010. 23. (a) Consider a model with ...
File
File

... which it was originally named. – The Tail-less mutation in mice is dominant, leading to mice with short or no tails. This mutation is also a recessive lethal, meaning that the homozygote for this mutation does not survive. This shows that the gene has at least one other function and that this functi ...
Genetics Tutorial
Genetics Tutorial

... individual can pass on genetic information to its offspring. In order to avoid doubling the number of chromosomes in each generation, cells must be created that carry only one set of chromosomes (haploid or 1n). ...
Revised Parikh Ch 11
Revised Parikh Ch 11

... Genes are passed from parents to offspring. (Mendel called genes, “factors.”) • Dominance- if two alleles in a gene pair are different, the dominant allele will control the trait and the recessive allele will be hidden • Segregation - each adult has two copies of each gene-one from each parent. Thes ...
P.Point Lecture Template - Green River Community College
P.Point Lecture Template - Green River Community College

... 3. Determine all possible gametes for each parent. • Alleles for a trait segregate into separate gametes during meiosis 4. Determine the genotypes of the offspring. • Make a Punnett square to represent all possible gamete combinations between the two parents 5. Use the genotypes found in the Punnett ...
Genetics Problems Name: ______ Date: Block: ______ 7.1 Single
Genetics Problems Name: ______ Date: Block: ______ 7.1 Single

... 15. John has type O blood. He knows his mother had type B blood. He does not know the identity of his father, however. What possible blood types could his father have had? Show your work. ...
File
File

... identical alleles for a particular gene—TT or tt in this example—are said to be homozygous. ...
Hardy-Weinberg Problems #2 - Westgate Mennonite Collegiate
Hardy-Weinberg Problems #2 - Westgate Mennonite Collegiate

Document
Document

... o In this case you have the homozygous YY and homozygous RR for the dominant, and here you have homozygous transmission for the recessive o The last two you have a mixture of the dominant and the recessive for the two different alleles. What are the possibilities then for transmission to the gametes ...
The neutral theory of molecular
The neutral theory of molecular

... 40% of the cases and will be lost in 60% of the cases, fixation occurs by random drift, which facilitates neither allele. A new mutant arising as a single copy in a population of size N individuals has an initial frequency of 1 / (2N) (diploid individuals). The probability of fixation of a particula ...
Population genetics
Population genetics

...  There are many causes of phenotypic variation.  Some of these include:  Genetic factors including mutation  Environmental factors (including food sources and ...
blackline master 1-1 - Science-with
blackline master 1-1 - Science-with

... For each trait that he tested, Mendel observed the same types of results and inferred the same pattern. This illustration shows a cross between true breeding purple-flowered plants and true breeding white-flowered plants. The ratio of phenotypes in the F2 generation is 3:1. ...
15 genetics problems 3 Linked genes
15 genetics problems 3 Linked genes

... with vestigial wings. The offspring had the following phenotypic distribution: Wild type: ...
P.Point Lecture Template - Green River Community College
P.Point Lecture Template - Green River Community College

6.6 Selection: Winning and Losing
6.6 Selection: Winning and Losing

... some individuals to perform better than others.Over many generations,Darwin and Wallace argued, selection can drive large-scaleevolutionary change,allowing new adaptationsto arise.In Chapter 10,we will considerthe origin of adaptationsin more detail. For now, let's focus on the question of how selec ...
05 Chapter heredity
05 Chapter heredity

... Sex-Linked Disorders • An allele inherited on a sex chromosome is called a sex-linked gene. • Color blindness is a sex-linked disorder in which people ...
Punnett Square Practice
Punnett Square Practice

... If females have an XX genotype and can only give X genes, which parent is the one that determines whether the baby is a boy or girl? Father ; The mother always gives an X If the father gives a y, it’s a boy. If the father gives an X; it’s a girl. ...
Prof. Kamakaka`s Lecture 4B Notes (PPT)
Prof. Kamakaka`s Lecture 4B Notes (PPT)

... than experimental and require the analysis of matings that have already taken place rather than the design and execution of crosses to directly test a hypothesis To understand inheritance patterns of a disease in human genetics you often follow a trait for several generations to infer its mode of in ...
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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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