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AP Biology  Lab 10
AP Biology Lab 10

... 1.0. Hardy and Weinberg also argued that if 5 conditions are met, the population's alleles and genotype frequencies will remain constant from generation to generation. These conditions are as follows:  The breeding population is large. (Reduces the problem of genetic drift.)  Mating is random. (In ...
Mendel`s Experiments and the Laws of Inheritance
Mendel`s Experiments and the Laws of Inheritance

... Mendel’s Experiments and the Laws of Inheritance • The progeny from the cross of the P parents are called the first filial generation, designated F1. • When F1 individuals are crossed to each other or self-fertilized, their progeny are designated F2. • Mendel’s well-organized plan allowed him to obs ...
Unit 8.2: Human Inheritance
Unit 8.2: Human Inheritance

... human traits are inherited in different ways. Some human traits have simple inheritance patterns like the traits that Gregor Mendel studied in pea plants. Other human traits have more complex inheritance patterns. Mendelian Inheritance in Humans Mendelian inheritance refers to the inheritance of tra ...
Dynamics of Cannibalism
Dynamics of Cannibalism

Genetics
Genetics

... • Horizontal lines connecting a male and a female represent a marriage • Vertical line and brackets connect parent to offspring • A shaded circle or square indicates a person has the trait • A circle or square NOT shaded represents an individual who does NOT have the trait • Partial shade indicates ...
AP Inheritance
AP Inheritance

... For ppYyrr: 1/4 x 1/2 x 1/2 = 1/16. For Ppyyrr: 1/2 x 1/2 x 1/2 = 2/16 For PPyyrr: 1/4 x 1/2 x 1/2 = 1/16 For ppyyrr: 1/4 x 1/2 x 1/2 = 1/16 Therefore, the chance of at least two recessive traits is 6/16 = 3/8. ...
Hardy-Weinberg Problems (BSC 1011C)
Hardy-Weinberg Problems (BSC 1011C)

... island where you remain for the rest of your lives. No one else ever comes to this island as it is totally isolated. Two of your friends carry (they are heterozygous) for a particular genetic disease. a. Assuming all the conditions of the Hardy-Weinberg equilibrium are maintained, what will be the p ...
Chapter 11 notes
Chapter 11 notes

... b. __________________ is the first-generation offspring in a breeding experiment. c. __________________ is the second-generation offspring in a breeding experiment. 4. He performed reciprocal crosses, i.e. pollen of __________________ plant to stigma of __________________ plant and vice versa. 5. H ...
Experimental design II: artificial selection
Experimental design II: artificial selection

... This artificial selection experiment on 6-week body weight mice (carried out over 30 generations in the upward and 24 generations in the downward direction) demonstrates how the intensity of selection (proportion selected) predicts the response to selection. Natural selection opposing artificial sel ...
What is an Evolutionary Algorithm?
What is an Evolutionary Algorithm?

... • Competition for those resources causes selection of those fitter individuals that are better adapted to the environment • These individuals act as seeds for the generation of new individuals through recombination and mutation • The new individuals have their fitness evaluated and compete (possibly ...
Modified Mendelian Ratios I
Modified Mendelian Ratios I

... – If trait is dominant, it will not skip generations nor be passed on to offspring unless parents have it. – If trait is recessive, it will skip generations and will exist in carriers. • Form a hypothesis, e.g. autosomal recessive. • Deduce the genotypes. • Check that genotypes are consistent with p ...
The Genetic Theory of Natural Selection
The Genetic Theory of Natural Selection

... The Genetic Theory of Natural Selection Considering a large (infinite) population size, we have seen that allele frequencies do not change by Mendelian inheritance alone; with recurrent mutation added we learned that alleles change very slowly, but eventually will all end up mutants, or reach an equ ...
video slide - Biology Junction
video slide - Biology Junction

... dihybrid F1 plants. Self-pollination of the F1 dihybrids, which are heterozygous for both characters, produced the F2 generation. The two hypotheses predict different phenotypic ratios. Note that yellow color (Y) and round shape (R) are dominant. ...
2005 Scholarship Biology (93101)
2005 Scholarship Biology (93101)

... Adaptive radiation OR convergence Adaptive radiation Explanation of the adaptive radiation process linked to the introduction of a single species and the wide range of ecological niches. Supported by several examples showing the variety in Hebe sp. Convergence Where species of very different evoluti ...
Sex Linked / "X" Linked Genetics Recall
Sex Linked / "X" Linked Genetics Recall

... Most of them code for something other than female anatomical traits. Many of the non-sex determining X-linked genes are responsible for abnormal conditions such as ... * hemophilia * red-green colour blindness * congenital night blindness, * duchene muscular dystrophy ...
Introduction vs Rationale, Writing
Introduction vs Rationale, Writing

... deterministic microevolutionary forces, but also because the use of molecular markers underpins many current practices in biodiversity conservation and management[iii]. The issue is thus not only of key relevance to our understanding of basic biological processes that determine species distribution ...
ASC-169: Beef Sire Selection Manual
ASC-169: Beef Sire Selection Manual

... that there is variation in the genetic makeup of the gametes produced, which is termed Mendelian sampling. Mendelian sampling can be clearly observed when you compare full-sibs, and humans are perfect examples. The fact that male and female children can be born to the same parents is one example of ...
laboratory 8: population genetics and evolution
laboratory 8: population genetics and evolution

... CASE II (Selection) Now that you have the facts of life well in hand, we can begin to modify our simulation, making it more realistic to enable us to investigate some basic questions about selection and gene frequencies. In humans, there are several genetic conditions that have been thoroughly inves ...
Allele
Allele

... Each gene has a specific inheritance pattern. - you will either be told or be given a hint; look at the heterozygote! ...
In silico fine-mapping: narrowing disease
In silico fine-mapping: narrowing disease

... preselect candidate genes jointly responsible for the trait. If animal models are driven by the same genetic mechanisms as those for human traits, we should expect to find conserved genetic sequences shared by QTLs of the animal models and susceptibility regions of the human trait. This principle ha ...
Punnett Squares
Punnett Squares

... straightforward examples involving only two alleles with clear-cut dominance. This makes inheritance patterns easy to see.  But very few traits actually only have two alleles with clear-cut dominance. As we learn more about genetics, we have found that there are often hundreds of alleles for any pa ...
Exam 2 (pdf - 592.95kb)
Exam 2 (pdf - 592.95kb)

Gene Flow and Natural Selection in Oceanic
Gene Flow and Natural Selection in Oceanic

... population, Gidra, and a Polynesian population, Tongans, by using the Affymetrix 500K assay. The SNP data were analyzed together with the data of the HapMap samples provided by Affymetrix. In agreement with previous studies, our phylogenetic analysis indicated that indigenous Melanesians are genetic ...
Dominant Recessive
Dominant Recessive

... pg 272 • Some alleles are neither dominant nor recessive, and many traits are controlled by multiples alleles or multiple genes. • Incomplete Dominance – when one allele is not necessarily dominant (red and white flowers produce pink) • Codominance – both alleles contribute to the phenotype. • Multi ...
Brooker Chapter 8
Brooker Chapter 8

... • Chromosomes on opposite sides of the translocation cross segregate into the same cell • Leads to balanced gametes – Both contain a complete set of genes and are thus viable ...
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Polymorphism (biology)



Polymorphism in biology is said to occur when two or more clearly different phenotypes exist in the same population of a species—in other words, the occurrence of more than one form or morph. In order to be classified as such, morphs must occupy the same habitat at the same time and belong to a panmictic population (one with random mating).Polymorphism as described here involves morphs of the phenotype. The term is also used somewhat differently by molecular biologists to describe certain point mutations in the genotype, such as SNPs (see also RFLPs). This usage is not discussed in this article.Polymorphism is common in nature; it is related to biodiversity, genetic variation and adaptation; it usually functions to retain variety of form in a population living in a varied environment. The most common example is sexual dimorphism, which occurs in many organisms. Other examples are mimetic forms of butterflies (see mimicry), and human hemoglobin and blood types.According to the theory of evolution, polymorphism results from evolutionary processes, as does any aspect of a species. It is heritable and is modified by natural selection. In polyphenism, an individual's genetic make-up allows for different morphs, and the switch mechanism that determines which morph is shown is environmental. In genetic polymorphism, the genetic make-up determines the morph. Ants exhibit both types in a single population.Polymorphism also refers to the occurrence of structurally and functionally more than two different types of individuals, called zooids within the same organism. It is a characteristic feature of Cnidarians.For example, in Obelia there are feeding individuals, the gastrozooids; the individuals capable of asexual reproduction only, the gonozooids, blastostyles and free-living or sexually reproducing individuals, the medusae.
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