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... Purple crossed with white = all purple ...
Punnett Square Word Notes
Punnett Square Word Notes

... Genetics and Probability A. Probability—the likelihood a particular event will occur B. “Principles of Probability” in genetics 1. Are used to PREDICT outcomes of genetic crosses 2. Account for RANDOM segregation of alleles ...
MENDEL AND THE GENE IDEA
MENDEL AND THE GENE IDEA

Appendix S1. VORTEX simulation parameters Table A1. Description
Appendix S1. VORTEX simulation parameters Table A1. Description

... depression that is due to lethal alleles vs. other genetic mechanisms Extent to which environmental variation in reproduction and survival are synchronized Extent to which populations are subjected to synchronous environmental variation in reproduction and survival rates ...
AP Biology - farishapbio
AP Biology - farishapbio

... next (genetic drift)  No gene flow – Gene flow (transfer of alleles between populations) can alter allele frequencies  No mutations – By introducing or removing genes from chromosomes or by changing one allele into another, mutations modify the gene pool  Random mating – If individuals preferenti ...
Population Genetics
Population Genetics

... dominant trait, why doesn’t this phenotype affect 3 out of 4 people? It is said that Punnett played cricket with G.H. Hardy. Both G.H. Hardy and Wilhelm Weinberg, independent of each other, pointed out that it was the percentage of the alleles in the population that had to be taken into consideratio ...
Mendel and Heredity
Mendel and Heredity

... An organism’s physical traits are determined by its genetic makeup. Most organisms inherit two versions of a gene for each physical trait. Sometimes, one gene is “dominant” over another “recessive” gene. When and organism inherits two dominant genes or a dominant gene and a recessive gene, their phe ...
The Evolution of Populations
The Evolution of Populations

... • Most occur in somatic cells. Have to be in gametes to be inherited. • Point mutations that do not change the amino acids or phenotype are harmless Otherwise mostly harmful • Chromosomal mutations often deleterious • Rates in animals and plants – 1/100,000 genes per generation – so rare • More rapi ...
2.4.measuring evolution of populations
2.4.measuring evolution of populations

... genotypes. B. The gene pool of this population never experienced mutation or gene flow. C. A very small number of mink may have colonized this island, and this founder effect and subsequent genetic drift could have fixed many alleles. D. Natural selection has selected for and fixed the best adapted ...
Honors Biology: Genetics Quiz 1
Honors Biology: Genetics Quiz 1

... _____ 17. What is the correct sequence for trait expression? A) RNA  DNA  Trait  Protein B) RNA  Protein  Trait  DNA C) Trait  Protein  RNA  DNA D) DNA  RNA  Protein  Trait _____ 18. In sheep, white fur is dominant to black fur. If two white sheep produce a black offspring, the parent’s ...
Variation Hereditary Information
Variation Hereditary Information

... mutations (and orthodox evolution theories) fail completely. As a source of "negative variability," however, mutations serve only too well. Basing their thinking on what we observe of mutations and their net effect (genetic burden), creationists use mutations to help explain the existence of disease ...
Genetics 2. A typical cell of any organism contains genetic
Genetics 2. A typical cell of any organism contains genetic

GENETICS
GENETICS

Chapter 1: Animal Agriculture
Chapter 1: Animal Agriculture

Nonlinear Genetics Inbreeding and Genetic Load
Nonlinear Genetics Inbreeding and Genetic Load

... of consanguineous mating for the family tree has no great value. There are populations where the principle of panmixed mating is essentially infringed. Usually it is geographically or socially be relative isolated small populations. In these populations the inbreeding, i.e. consanguineous mating of ...
5.2- Studying Genetic Crosses
5.2- Studying Genetic Crosses

... used to illustrate all possible genotypes and phenotypes of offspring from genetic crosses • Shows probability • Each square represents a 25% chance of occurrence for that trait ...
Chromosomes, Genes, and Alleles, oh my
Chromosomes, Genes, and Alleles, oh my

... 3. This gene may have different alleles. Alleles are the different forms of a certain gene – the different alleles all deal with the same trait but have slightly different information. The different alleles of the gene will be almost identical and will be in the same place on different chromosomes b ...
Ch. 10.5 Sex-Linked Traits
Ch. 10.5 Sex-Linked Traits

What is Genetics
What is Genetics

... • Females produce eggs that have only an X ...
Punnett Square Worksheet
Punnett Square Worksheet

... 2. Traits are characteristic that can be passed only from a ___________ thing to its _______________. 3. The process in which traits are passed from parents to offspring is _________________. 4. Each cell of a Punnett square represents one possible _______________ outcome for any offspring of two sp ...
genetics
genetics

... that have 2 alleles  EXAMPLE: cleft chin  If a person inherits two dominant alleles (CC) or one dominant & one recessive (Cc), they will have a cleft chin (top)  If a person inherits 2 recessive alleles (cc), they will not have a cleft chin ...
Heredity
Heredity

... • ___________________ Breeding is an intentional mating of organisms to produce offspring with specific traits • Pure breeding – Crossing two individuals that have ________________________ or similar sets of alleles. • Example: breeding only fast horses, breeding only labs – Con – __________________ ...
Chapter 23 Evolution of Populations
Chapter 23 Evolution of Populations

... species into several new species if it continues for a long enough period of time and the populations don’t interbreed. ...
Chapter 13 Chromosomes
Chapter 13 Chromosomes

... Resistant hosts are selected for because they survive infection and live to reproduce. In this way, TB evolved from an acute systemic infection into a chronic lung infection. In the 1980s, antibiotic-resistant TB strains led to re-emergence of the disease. ...
CHAPTER 11 QUICK LAB
CHAPTER 11 QUICK LAB

... 1. Shuffle the cards and hold the deck face down. Turn over 40 cards to represent the alleles of 20 offspring produced by random matings in the initial population. 2. Separate the 40 cards by suit. Find the allele frequencies for the offspring by calculating the percentage of each suit. 3. Suppose a ...
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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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