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Human Genetics
Human Genetics

...  Cryptorchidism is a genetic condition in which one or both testicles fail to descend, and remain in the abdomen. In development, testicles and ovaries develop from the same embryonic tissue, located low in the abdomen, roughly the same position ovaries are located in fully developed females. Late ...
Chapter 23 outline
Chapter 23 outline

... phenotypic forms in a population. Two mechanisms: Heterozygote Advantage – If individuals who are heterozygous at a particular locus have greater survivorship and reproductive success than any type of homozygote, then two or more alleles will be maintained at that locus by natural selection. Frequen ...
Meiosis
Meiosis

... independent assortment I know how nondisjuction occurs and the genetic disorders that might result I can describe the formation of gametes : Spermatogenesis & oogenesis I can describe Gregor Mendels famous experiments with pea plants; including the P, F1 and F2 generations I can explain the differen ...
BIOL
BIOL

... 1. that IA and IB are dominant over IO and codominant with respect to each other. 2. that genotype and phenotype are always linked. 3. that under some circumstances, other factors may override the genotype in question, producing phenotypes that do not match the genotype. 4. the difference between th ...
Unit 2 - Molecular and genetic factors in disease
Unit 2 - Molecular and genetic factors in disease

... inherited from the mother or father If an imprinted gene carries a mutation then the manifestation of the disease will vary according to which parent transmitted the mutation. For example a certain region on chromosome 15 contain several genes in which only the paternal or maternal allel ...
Biology B Trimester Review 6-1
Biology B Trimester Review 6-1

... 21. What are the three units to the above monomer? 22. Identify the 4 different types of nitrogenous bases? 23. Nitrogenous bases can be sorted into two groups. Name the groups and explain how they are classified. 24. What units make up the backbone of DNA? 25. Explain complementary base pairing and ...
MS Word worksheet
MS Word worksheet

... Indicate which gene is dominant and which is recessive (you pick the trait to study). Explain how the hybrid parents were produced. Indicate the genotype(s) that are present in the F2 generation. Indicate the ratio of phenotypes in the F2 generation. Draw a Punnett square that illustrates this cross ...
Grade 11 Genetics Review
Grade 11 Genetics Review

... d) to produce identical cells to treat disease e) to repopulate endangered species 5. What are haploid and diploid cells? Where is each cell type found? 6. Describe what the terms dominant and recessive mean. How are they used to describe the forms of a trait at the genotype level and at the phenoty ...
Genes and Health: Moving Beyond Race
Genes and Health: Moving Beyond Race

... from each other for a very long time. They have had to adapt to different environments. The groups--Asians, Europeans, and Africans-- have different genetic characteristics.) • How do the scientists determine ancestry? (Answer: Scientists trace a person’s ancestry through his or her DNA.) • In ter ...
Chapter 11
Chapter 11

... • Accidental changes in genes are called mutations  mutations occur only rarely and almost always result in recessive alleles • not eliminated from the population because they are not usually expressed in most individuals (heterozygotes) • in some cases, particular mutant alleles have become more c ...
Slide 1
Slide 1

Non-Mendelian Patterns of Inheritance: Incomplete Dominance
Non-Mendelian Patterns of Inheritance: Incomplete Dominance

... Autosomal inheritance – genes are located on the autosomes, same for both male and female Sex-linked inheritance – genes located on the sex chromosomes, different for male and female Sex-influenced traits – sex hormones create different phenotypes in males and females (Ex. Baldness) Multiple alleles ...
Natural Selection in Populations
Natural Selection in Populations

... • Mutation is a random change in the DNA of a gene. – can form new allele – can be passed on to offspring if in reproductive cells ...
Linkage Disequilibrium essay
Linkage Disequilibrium essay

... An excess of linkage disequilibrium is known to be a signature of a selective sweep. While LD between neutral loci is eliminated by a selective sweep at an intervening site, if the selected site does not separate the neutral loci LD can be increased or decreased depending on their proximity to the s ...
Presentation
Presentation

... Queen Victoria was a carrier of hemophilia. She had nine children and passed hemophilia on to several of them. All of her children married into the royal families of various countries of Europe. In this way, all of the Royal Families of Europe inherited the gene for hemophilia. ...
Lesson Plan - Colorado FFA
Lesson Plan - Colorado FFA

... dominant traits. Wavy hair is heterozygous and is intermediate between straight and curly hair. b. Codominance: two dominant alleles are expressed at the same time; both forms of the trait are displayed. i. One example is the roan coat in horses. A cross between a homozygous red horse and a homozygo ...
Human Genetics I
Human Genetics I

... Level of mutant heteroplasmy + age of patient influence severity of symptoms ...
Genetics
Genetics

... All of these animals don’t look alike, but you recognize them as dogs. What do they have in common? ...
Life Science Chapters 3 & 4 Genetics Gregor Mendel
Life Science Chapters 3 & 4 Genetics Gregor Mendel

... • Must be able to determine the genotypes of the parents In this case, when two hybrids are crossed, the possible outcomes are: the phenotype ratio is 3:1 3 dominant 1 Recessive genotype ratio is 1:2:1 1 Homozygus dominant 2 Heterozygus 1 Homozygus recessive ...
Sex-Linked Trait Notes
Sex-Linked Trait Notes

... Polygenic • A trait that is controlled by the interaction between 2 or more genes. – Examples: skin color, height, hair color – Results in a continuum of expressed phenotypes. ...
Monohybrid and Test Cross Practice
Monohybrid and Test Cross Practice

... Either _______ or ______ ...
TTpp
TTpp

... chromosome; person with complete linked genes can form only noncrossover gametes. 2) incomplete linkage - when genes stay together at a far apart (under 50 cM); person with incomplete linked genes can produce crossover and noncrossover gametes, ...
Mendelian Genetics
Mendelian Genetics

... Mendelian Genetics GREGOR MENDEL: 1860, father of genetics. An Austrian monk who developed the laws of inheritance by studying garden peas. Showed that parents can pass heritable factors to their children (genes).  Genes: stretches of DNA on chromosomes that can determine a trait. Always located o ...
Monohybrid and Test Cross Practice
Monohybrid and Test Cross Practice

... Either _______ or ______ ...
Monohybrid and Test Cross Practice Problems
Monohybrid and Test Cross Practice Problems

... Either _______ or ______ ...
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Quantitative trait locus

A quantitative trait locus (QTL) is a section of DNA (the locus) that correlates with variation in a phenotype (the quantitative trait). The QTL typically is linked to, or contains, the genes that control that phenotype. QTLs are mapped by identifying which molecular markers (such as SNPs or AFLPs) correlate with an observed trait. This is often an early step in identifying and sequencing the actual genes that cause the trait variation.Quantitative traits are phenotypes (characteristics) that vary in degree and can be attributed to polygenic effects, i.e., the product of two or more genes, and their environment.
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