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Blueprint of life
Blueprint of life

... After eight years of collecting data from nearly 30 000 pea plants, Mendel discovered the natural laws of inheritance. Mendel’s findings on plant hybridisation were presented in two lectures before the Society for the Natural Sciences in 1865 in Brünn, Moravia (now called Brno in the Czech Republic) ...
Incipient allochronic speciation due to non
Incipient allochronic speciation due to non

... reproductive isolation by increasing genetic variance, which facilitates splitting of a population into two noninterbreeding parts. Two major forms of non-random mating are inbreeding, due to mating between closely related individuals with similar genotypes, and assortative mating in which phenotypi ...
C. African American
C. African American

... B. Punnett square C. pedigree D. ________ A person that has one copy of a recessive autosomal allele and does not express the trait but can pass it on to his/her offspring is called a __________________. A. B. carrier C. hemophiliac D. gene marker ________ ...
Fruit Flies
Fruit Flies

... Genetics is the branch of biology concerned with heredity and variation (Cumming and Klug, 2000, p.5). Heredity is the passing of traits from a parent to an offspring. For example, handedness, the preference of using one hand over the other, is a trait that can be passed down from parents to their o ...
CHAPTER 14 MENDEL AND THE GENE IDEA Section A: Gregor
CHAPTER 14 MENDEL AND THE GENE IDEA Section A: Gregor

... • We can use the rule of multiplication to determine the chance that two or more independent events will occur together in some specific combination. • Compute the probability of each independent event. • Then, multiply the individual probabilities to obtain the overall probability of these events ...
14A-GrgorMendalsDiscovries
14A-GrgorMendalsDiscovries

... • We can use the rule of multiplication to determine the chance that two or more independent events will occur together in some specific combination. • Compute the probability of each independent event. • Then, multiply the individual probabilities to obtain the overall probability of these events ...
does frequency-dependent selection with complex - GEPV
does frequency-dependent selection with complex - GEPV

... total fruit elongation. For each pair of individuals, we performed at least 10 replicates of controlled pollinations in both directions, that is, each plant was used either as pollen donor or as pollen receptor. Pollination was classified as “successful” when the fruit was at least 6.1 mm long and c ...
GroEL buffers against deleterious mutations
GroEL buffers against deleterious mutations

... causing the fixation of deleterious mutations due to genetic drift and hence an irreversible decline in fitness8. However, endosymbiosis is surprisingly stable and persists over long periods9, which has led to the suggestion5 that groE (the GroEL-encoding operon) could be buffering the mutational lo ...
11.4 Hardy-Weinberg Equilibrium KEY CONCEPT  Hardy-Weinberg equilibrium provides a framework for
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... • Predicted genotype frequencies are compared with actual frequencies. – used for traits in simple dominant-recessive systems – must know frequency of recessive homozygotes – p2 + 2pq + q2 = 1 "The Hardy-Weinberg equation is based on Mendelian genetics. It is derived from a simple Punnett square in ...
5.1.2 Meiosis and Variation
5.1.2 Meiosis and Variation

... The type of natural selection that can produce the type of speciation that has occurred in seahorses is known as disruptive selection. This is where the extreme phenotypes are more likely to survive and reproduce than the intermediate phenotypes. (b) ...
MONOHYBRID PROBLEMS
MONOHYBRID PROBLEMS

... Before genetic problems may be adequately understood and solved, you must first understand the process of meiosis and also know how to apply the following. Homologous Chromosomes: chromosomes that are similar in size, shape and carry similar genetic information. One comes from the mother and one fro ...
Lesson 2 | Understanding Inheritance
Lesson 2 | Understanding Inheritance

Hardy–Weinberg Equilibrium and the Foundations of Evolutionary
Hardy–Weinberg Equilibrium and the Foundations of Evolutionary

... change from one generation to the next, and (b) genotypic frequencies will be related to allele frequencies as Pij = pipj by random mating. The corollary to point (b) is that regardless of what genotypic frequencies we start with, one generation of random mating in an ideal large population will al ...
LAB II - Reed College
LAB II - Reed College

... Among the mechanisms underlying the evolution of species are those that bring about changes in allele frequencies in populations. For such changes to take place, there must be genetic variation among individuals. This variation results from gene mutation, migration, or genetic recombination. These g ...
16 Simple Patterns of Inheritance
16 Simple Patterns of Inheritance

... has very fair skin, blond hair, and blue eyes.* In contrast, her parents and three brothers have dark skin, black hair, and brown eyes, as do most of her relatives and most of the people in the city where she lives. Ntombi is very close to her aunt, who also has albinism. Cases like Ntombi’s have in ...
Genetics Practice Problems Key
Genetics Practice Problems Key

The scope of Population Genetics Forces acting on allele
The scope of Population Genetics Forces acting on allele

... • Consider a population with N diploid individuals. The total number of gene copies is then 2N. • Initial allele frequencies for A and a are p and q, and we randomly draw WITH REPLACEMENT enough gene copies to make the next generation. • The probability of drawing i copies of allele A is: ...
4/1/2011 Probability and Independent Assortment Genetical Jargon
4/1/2011 Probability and Independent Assortment Genetical Jargon

... How to explain the 9:3:3:1 distribution of progeny? If the traits are combining at random, then the product rule of probability can be used to calculate the expected frequency of round, yellow plants (both dominant phenotypes): 3/4 (round) X 3/4 (for yellow) = 9/16 (both round and yellow). This is ...
1/7/2011 Probability and Independent Assortment Genetical Jargon
1/7/2011 Probability and Independent Assortment Genetical Jargon

... How to explain the 9:3:3:1 distribution of progeny? If the traits are combining at random, then the product rule of probability can be used to calculate the expected frequency of round, yellow plants (both dominant phenotypes): 3/4 (round) X 3/4 (for yellow) = 9/16 (both round and yellow). This is ...
Genetic variation of ApoB 3′ hyper variable region polymorphism
Genetic variation of ApoB 3′ hyper variable region polymorphism

... groups. The average observed heterozygosity was quite high (0.717), suggesting high diversity at the ApoB 3′′ HVR locus. Low value of average GST (0.0126) and FST (0.002) reflects non-significant deviation of heterozygosity between the three subgroups. On comparing the three study groups with ApoB 3 ...
DESIGNING ARTIFICIAL SELECTION EXPERIMENTS
DESIGNING ARTIFICIAL SELECTION EXPERIMENTS

... drift causing the K sublines to vary around the expected mean, and some loci in some sublines will become fixed at values less than the upper genetic limit. This reduction in the expected value of the mean due to drift, Dd, does not occur in the first selected generation of parents because they are ...
7.014 Genetics Section Problems
7.014 Genetics Section Problems

... an I B ALK+ chromosome from Mom. iv) Individual 4 got an IA ALK- chromosome from Mom and an io ALK- chromosome from Dad. If no recombination occurred, then for this impending child the chance of getting I B ALK+ chromosome from Dad is 50%. The chance of getting the other chromosome, i o ALK- is also ...
Genes - Mount Carmel Academy
Genes - Mount Carmel Academy

... Assuming that you expect 5 heads and 5 tails in 10 tosses, how do the results of your tosses compare? How about the results of your partner’s tosses? How close was each set of results to what was expected? ...
Population Genetics and Random Evolution
Population Genetics and Random Evolution

... Panel 10.1B The term, “species”, means a particular kind of living thing The term “species” refers to a particular kind of organism. A species can be represented by living individuals (the species is extant) or the species may have no more living representatives (the species is extinct). The living ...
Introduction to Angelfish Genetics
Introduction to Angelfish Genetics

... Once I saw two adult angels in a pet store tank with a spawn of wigglers. The male was black and the female was gold. I wondered, what will the babies look like? ...
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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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