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Misconceptions
Misconceptions

... 36. All hormones have the same types of effects on cells, no matter what they are made of. 37. Sex and reproduction is always the same thing. (Don’t make this dirty!!) 38. The process of development is very different in different types of species. 39. Neurons are the only type of cell that has a res ...
Misconceptions - Groch Biology
Misconceptions - Groch Biology

... a. Dominant alleles are more likely to be inherited than recessive alleles. b. ...
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... move in and out of populations • Sometimes males will leave when they mature to form their own group ...
Genetics Session 5a_2016
Genetics Session 5a_2016

... Reaction norms describe the range of phenotypes produced by a genotype in different environment ...
Genetics pt 1 1314
Genetics pt 1 1314

... There are two forms and they’re represented by letters of the alphabet. Some traits are determined by one allele and some are multi-allelic. In sexual reproduction, one allele come from the male and one comes from the female, so…there will be two (2) alleles. ...
evolutionmopupNED2013rev 76.5 KB
evolutionmopupNED2013rev 76.5 KB

... Hardy-Weinberg equilibrium. I flew through this. The math is algebra 1 but the symbolism is a little harder to grasp. This is a model for allelic frequency in populations where 2 alleles predominate and a balance exists. It can be used to measure allelic shifts that precede speciation. If the allele ...
Chapter 11 Introduction to Genetics.notebook
Chapter 11 Introduction to Genetics.notebook

... 1. Biological inheritance is determined by factors that are     passed from generation to generation. Trait specific characteristic  Each original plant was the parent plant ­ P Generation Offspring from the P Generation ­ F1 or First Filial  Hybrids ­ offspring with two different traits Genes ­ che ...
Biology 345 Organic Evolution
Biology 345 Organic Evolution

... may be visible, like color) • Genotype – All alleles of a gene possessed by an individual. Classified as: A) Homozygous – union of gametes carrying identical alleles; produce homozygotes B) Heterozygous – union of gametes carrying different alleles; produce heterozygotes ...
Biology 345 Organic Evolution
Biology 345 Organic Evolution

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Genes and Variatoin

... Evolution as Genetic Change • Natural selection on single-gene traits can lead to changes in allele frequencies and thus to evolution • Ex. Population of moths (light colored with dark spots) • But experiences mutations that produce (darker) forms ...
Exam 1 - Evergreen Archives
Exam 1 - Evergreen Archives

... that the use of DDT has been banned in the US, what do you expect to happen to levels of resistance to DDT among insect populations? Justify your answer. Basically, it all boils down to natural selection. Among individuals within a population of insects there is genetic variation. At the time of ini ...
Pedigree Practice: Pre Test
Pedigree Practice: Pre Test

... C. more than one allele for a trait ...
Introduction to Genetics
Introduction to Genetics

... • Some alleles are dominant, some are recessive. – If an organism has a dominant allele for a trait, that is the allele that will be expressed. – Example: Yellow peas are dominant over green peas. If the yellow pea allele is present even once, the peas will be yellow. ...
MECHANISMS FOR EVOLUTION
MECHANISMS FOR EVOLUTION

... • GENETIC DRIFT – in small populations the frequencies of alleles can be drastically affected by chance events – BOTTLENECK EFFECT – if populations are driven to the point of extinction the remaining individuals do not carry a true representation of the original gene pool. – FOUNDER EFFECT – when a ...
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...  One year they witnessed 3 males and 2 females remaining on the island to breed  They produced 17 young birds which became the founders of the new population on the island  They have remained ever since and upon further investigation this population is now genetically different from the original ...
Slide 1
Slide 1

...  One year they witnessed 3 males and 2 females remaining on the island to breed  They produced 17 young birds which became the founders of the new population on the island  They have remained ever since and upon further investigation this population is now genetically different from the original ...
Unit 6: Mendelian Genetics
Unit 6: Mendelian Genetics

... expressed the dominant trait.  Self-pollinated the F1 plants & called offspring F2 generation. ...
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Population Genetics
Population Genetics

... a localized group of individuals belonging to the same species a species a group of populations whose individuals have the potential to interbreed and produce fertile offspring in nature ...
Mendel and the Gene Idea
Mendel and the Gene Idea

... phenotypic expression of another gene at a second locus ...
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1 - Acpsd.net

... 3. Co-dominance- both alleles expressed together in phenotype. Ex. Red parent crossed with a white parent offspring would be Red and white in the same flower. Incomplete dominance- offspring is in-between that of the parents. Ex. Cross between Red and white makes a Pink flower. Complete dominance – ...
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No Slide Title

INTRO LECTURE GENETICS
INTRO LECTURE GENETICS

... •Homozygous: An organism with two alike alleles. •Homo. Dominant •2 Capital letters •Ex. ZZ, BB, FF •Homozygous Recessive •2 lower case letters •Ex. tt, bb, gg •Heterozygous: An organism with two different alleles for a trait. •Heterozygous Dominant: One capital letter and one lower case •Ex. Gg, Hh ...
Genetics Notes
Genetics Notes

... III. Punnett Squares – used to describe the ratio of expected outcomes of a genetic cross. A. Monohybrid cross – (mono meaning one) 1 trait is crossed. 1. Have two alleles for each gene. 2. Ex: T = tall, dom t = short TT x tt ...
Chapter 4 study game
Chapter 4 study game

... b. Three or more chromosomes that determine a trait c. 2 codominant genes d. 3 or more forms of a gene that code for a single trait ...
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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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