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Mendel and Gen terms BIO
Mendel and Gen terms BIO

... Why was the pea a good choice? 1) Cheap and available 2) Produce offspring quickly/short generation time 3) Characteristics are determined on one gene with only two alleles. Ex. Flower color: purple or white 4) No blending of traits 5) Can control breeding because of access to male and female sex p ...
Genetics and Heredity Notes  I. Introduction
Genetics and Heredity Notes I. Introduction

... For example, in mice and many other mammals, coat color depends on two genes. One, the epistatic gene, determines whether pigment will be deposited in hair or not. Presence of pigment (C) is dominant to absence of pigment (c). The second gene determines whether the pigment to be deposited is black ( ...
PRE-AP BIOLOGY: GENETICS
PRE-AP BIOLOGY: GENETICS

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... A. Improve crops B. Improve domestic animals C. Determine risk for genetic disorders D. Predict expected results of genotypes or phenotypes ...
Evolution as Genetic Change
Evolution as Genetic Change

... much – human infants – small babies, low survival, big babies low survival (difficulty being born) average size babies – higher fitness  Disruptive selection – opposite ends of curve favor selection – results in 2 sub group populations Genetic drift  In small populations the expected results of ge ...
Mechanisms of Evolution - Mr. Doyle SUIS Science
Mechanisms of Evolution - Mr. Doyle SUIS Science

... which follow the rule of simple dominance at a single locus. The condition affects only homozygous recessive individuals. (the heterozygous phenotype shows no symptoms). The population size we are studying is 10,000 individuals and there are 36 individuals affected by the condition. Based on this in ...
Genetics Since Mendle
Genetics Since Mendle

... 3. Example: Some people may be at risk for skin cancer. These people need to limit their exposure to the Sun. ...
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, The allele for red-coloured flowers must be domi

... (b) If either grandparent was homozygous (NN) the N allele would be dominant in the offspring, the PKU allele would not be expressed and none of their children would be affected. (c) Jane's husband must be heterozygous (Nn). (d) If he were homozygous (NN) all his children would receive a dominant al ...
Biology Chapter 8 Study Guide - Wood
Biology Chapter 8 Study Guide - Wood

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Genetic Engineering - Petal School District
Genetic Engineering - Petal School District

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Life Science Chapter 6 Study Guide
Life Science Chapter 6 Study Guide

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Chapter 15 and 16 Study Guide Answers
Chapter 15 and 16 Study Guide Answers

... caused by recessive genes. 4. The bright coloration may increase a male’s chances of being selected for mating by a female. 5. Genetic homozygosity leaves no variation for natural selection to act on. Therefore, a new disease could wipe out the entire population. 6. directional selection; the cow wo ...
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Evolution 1/e - SUNY Plattsburgh
Evolution 1/e - SUNY Plattsburgh

...  A bottleneck occurs when a population is reduced to a few individuals and subsequently expands. Even though the population is large it may not be genetically diverse as few alleles passed through the bottleneck. ...
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... a. Both the man and the woman have sicklecell disease b. Both the man and the woman are carriers of sickle-cell disease. c. Only the woman is a carrier of sickle-cell disease. d. Only the man is a carrier of sickle-cell ...
Genetics
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Name: ____________ Pd.: ______ Date: What is the advantage of
Name: ____________ Pd.: ______ Date: What is the advantage of

... 32. Tell what type of isolation is occurring in each of the following examples” ____geographic________: a population is separated by a body of water after flooding ____behavioral___________: some members of a population have developed different methods of courtship than other members of the populat ...
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A pedigree is a chart that shows how a trait and the genes that

Genetic Notes - Biloxi Public Schools
Genetic Notes - Biloxi Public Schools

... GE crops may be too successful--If one kind of rice is more nourishing than any other, all the farmers in an area might plant that kind of rice. In the short term, everyone would benefit from the modified rice. However, the new rice might be vulnerable to disease or it might not produce a crop in a ...
BIOLOGY CLASS NOTES UNIT 7_Part 2 Other Patterns of
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... INCOMPLETE DOMINANCE = When alleles are neither recessive nor dominant Phenotype for heterozygous offspring is in between the homozygous phenotypes ...
Course Intro and Expectations 2017
Course Intro and Expectations 2017

... • ~7000 coding sequence changes (non-synonymous variants). • ~500 amino acid substitutions predicted to be deleterious to gene function, the vast majority are in heterozygous state. • ~75 de novo SNPs acquired per generation ~7000 Mendelian inherited diseases (CF, DMD, etc) – these are defined as ra ...
Human Genetics: Dominant & Recessive Trait
Human Genetics: Dominant & Recessive Trait

... Dominant: Only one allele at a locus is expressed. The other (recessive gene) is suppressed. Recessive: An allele that is suppressed in the presence of a dominant gene. If the two recessive alleles occur at a locus, then the trait is expressed ...
Prelab Reading
Prelab Reading

... meiosis. In humans, meiosis occurs in the cells of the ovaries and testes to produce eggs and sperm. Cells produced by meiosis are called gametes and they contain ½ of an individual’s genes and chromosomes. Gametes are united at fertilization. When a gamete from a female fuses with a gamete from a m ...
Independent Assortment
Independent Assortment

... Genetics Study guide 30. The Mendelian theory of ___________ assortment states that each gene of a pair tends to assort into gametes independently of other gene pairs located on nonhomologous chromosomes. 31. What is the difference between complete dominance, incomplete dominance, and codominance. ...
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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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