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Genetic Algorithms
Genetic Algorithms

... Possible settings for a gene are called alleles, e.g. in the example above the alleles are 0s and 1s, and if a gene codes a trait then an allele is the trait instance. For binary chromosomes, the alleles “alphabet” consists of just two characters, 0 and 1; There might be bigger “alphabets” to repres ...
Should this dog be called Spot? Imagine this microscope drama. A
Should this dog be called Spot? Imagine this microscope drama. A

... 11. Does the female dog have curly hair? __________ 12. Does the male dog have curly hair? __________ 13. Define the term heterozygous ________________________________________________________ 14. For which traits is the puppy heterozygous? ____________________________________________ 15, Define the ...
What Are Traits Packet
What Are Traits Packet

... Why don't you look like a giraffe? Well, obviously, neither of your parents are giraffes. Besides that, though, it's heredity, or the passing of traits from parents to offspring that is responsible. It is pretty complicated. You may have blue eyes, but your parents have brown: You may have curly hai ...
Evolution without Species: The Case of Mosaic
Evolution without Species: The Case of Mosaic

... Phenetic species concepts are often rejected on theoretical grounds because there can be individuals that are less similar to conspecifics but should seemingly still belong to that species (Sterelny & Griffiths [1999], p. 184). Nonetheless, phenetic methods are commonly adopted by virologists attempti ...
The Fly Genome
The Fly Genome

... that region show hybridization on the outside of this structure, but not in the middle Figure from http://www.helsinki.fi/~saura/EM/xdiv2.html ...
Extreme Individuals in Natural Populations
Extreme Individuals in Natural Populations

... often estimates that are relatively imprecise require very large numbers of samples, particularly for smaller and more aggregated populations (e.g., Resh 1979, Roberts et al. 1982). Samples with small numbers of individuals are normally considered significant chiefly because they increase the varian ...
Document
Document

... 7. Mendel used pea plants, because they reproduce quickly / slowly, and he could control how they grow / mate. 8. Mendel bred flowers resulting in F1 generation with dominant / recessive phenotype. He then allowed the F1 generation offspring to self-pollinate. This resulted in an F2 generation with ...
Name Introduction to Genetics Genetics: I. Genes and
Name Introduction to Genetics Genetics: I. Genes and

... H. Another component of our blood type is the Rh factor. Some people have Rh positive blood and others have Rh negative blood. The Rh factor is determined by one gene with two alleles. The allele for Rh positive is dominant over the allele for Rh negative. Let’s use “R” to represent the positive all ...
HETEROSIS AND DOMINANCE OF SIZE FACTORS IN
HETEROSIS AND DOMINANCE OF SIZE FACTORS IN

... Some of these varieties showed marked deviations from the root form typical of the variety, and red varieties sometimes produced some purple or white roots, etc. 111.1915, 96 lots of plants were grown, of which 81 were progeny of openpollinated wild parents. These lots were in general excessively va ...
Bot-genetics basis of inheritance
Bot-genetics basis of inheritance

... have genotype TT or Tt and dwarf will have tt. (Entire genetic constitution of an organism is called 'genome'.)  Homozygous –The organism or an individual possessing similar alleles for a particular trait is called homozygous or pure for that trait. Homozygous breeds true to the trait and produces ...
Chromosomal Abnormalities
Chromosomal Abnormalities

... 2. Give one example to illustrate the difference between genotype and phenotype. What other factor(s) will affect phenotypic expression? (Answers will vary.) 3. Give an example to illustrate the difference in phenotype between complete and incomplete dominance. (Answers will vary.) 4. What is the di ...
Consulta: subjectFacets:"Tetraploid" Registros recuperados: 6 Data
Consulta: subjectFacets:"Tetraploid" Registros recuperados: 6 Data

... Magnolia biondii var. purpurascens var. nov. and Magnolia cylindrica var. purpurascens var. nov. (Magnoliaceae) are described as two new varieties endemic to China. Magnolia biondii var. purpurascens is mainly restricted to forests of Shaanxi and SE Gansu provinces. It differs from the typical varie ...
Blueprint of life
Blueprint of life

... An organism with a pure breeding trait is said to be homozygous for that feature. So AA and aa are both homozygous; AA is pure breeding dominant and aa is pure breeding recessive. The hybrid character is called heterozygous. Aa is an example. To help you to remember ...
Dihybrid Problems - Milan Area Schools
Dihybrid Problems - Milan Area Schools

... Phenotypes (Offspring types) ...
age roofs ofs proofs proof
age roofs ofs proofs proof

... equally likely that, in another gamete, the long red chromosome would be present with the short blue chromosome. The third observation is that during meiosis, exchanges of segments between matching chromosomes occur. This results in the creation of some new genetic combinations that differ from thos ...
Document
Document

... E1.A genetic cross is a mating between two different individuals. CHAPTER 2 C1. Mendel’s work showed that genetic determinants are inherited in a dominant/recessive manner. This was readily apparent in many of his crosses. For example, when he crossed two true-breeding plants for a trait such as hei ...
Modeling Crossing Over of Alleles and Resulting Daughter Cells
Modeling Crossing Over of Alleles and Resulting Daughter Cells

... pipe cleaner represents a duplicated copy of the DNA. 5. Twist the two white wires around one another between the fourth and fifth beads. The twisted pipe cleaners represent one chromosome and the twist represents the centromere that binds the two sister chromatids together. 6. Add eight blue beads ...
Dihybrid Crosses Worksheet
Dihybrid Crosses Worksheet

... 1. What would be the genotype for an offspring that is rough and yellow? 2. What would be the phenotype for an offspring that is AaBb? 3. What fraction of the offspring will be rough and green? Remember to express this as -/16. 4. What fraction of the offspring will be AAbb? 5. What fraction of the ...
chapter-6-mendel-heredity
chapter-6-mendel-heredity

... know if they are carriers or if their children might get the disorder. ...
Punnett squares #1 - Bonar Law Memorial
Punnett squares #1 - Bonar Law Memorial

... What are the chances a child will have a square shape? ________ out of 4 OR _______% What are the chances a child will have a round shape? ________ out of 4 OR _______% ...
Base composition, speciation, and why the mitochondrial
Base composition, speciation, and why the mitochondrial

... uniform difference of GC content in individual molecules. In other words, assuming that strains of Tetrahymena have a common phylogenetic origin, when the GC content of DNA of a particular strain changes, all the molecules undergo increases or decreases of GC pairs in similar amounts. This result is ...
Outline for today`s lecture (Ch. 14, Part I) Ploidy vs. DNA content The
Outline for today`s lecture (Ch. 14, Part I) Ploidy vs. DNA content The

... • Peas were a fortuitous study organism for several reasons: – Many variable characters (e.g., flower color, seed shape, seed color, etc.) ...
Punnett Square Exercises
Punnett Square Exercises

... every possible fertilization combination is considered; a tool that shows how genes can combine; used to predict results in genetics. KEY CONCEPTS • The Law of Dominance: When an organism is heterozygous for a pair of contrasting traits, only the dominant trait can be seen in the organism. • The Law ...
RrYy
RrYy

... Peas were a fortuitous study organism for several reasons: – Many variable characters (e.g., flower color, seed shape, seed color, etc.) – Many varieties that bred “true” for particular traits (e.g., purple flowers, round seeds, etc.) – Easy to do controlled crosses, both “self” and outcross ...
No Slide Title
No Slide Title

... Some endophytes increase root growth enough to help Screen for drought resistance then insert ...
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Hybrid (biology)



In biology a hybrid, also known as cross breed, is the result of mixing, through sexual reproduction, two animals or plants of different breeds, varieties, species or genera. Using genetic terminology, it may be defined as follows. Hybrid generally refers to any offspring resulting from the breeding of two genetically distinct individuals, which usually will result in a high degree of heterozygosity, though hybrid and heterozygous are not, strictly speaking, synonymous. a genetic hybrid carries two different alleles of the same gene a structural hybrid results from the fusion of gametes that have differing structure in at least one chromosome, as a result of structural abnormalities a numerical hybrid results from the fusion of gametes having different haploid numbers of chromosomes a permanent hybrid is a situation where only the heterozygous genotype occurs, because all homozygous combinations are lethal.From a taxonomic perspective, hybrid refers to: Offspring resulting from the interbreeding between two animal species or plant species. See also hybrid speciation. Hybrids between different subspecies within a species (such as between the Bengal tiger and Siberian tiger) are known as intra-specific hybrids. Hybrids between different species within the same genus (such as between lions and tigers) are sometimes known as interspecific hybrids or crosses. Hybrids between different genera (such as between sheep and goats) are known as intergeneric hybrids. Extremely rare interfamilial hybrids have been known to occur (such as the guineafowl hybrids). No interordinal (between different orders) animal hybrids are known. The third type of hybrid consists of crosses between populations, breeds or cultivars within a single species. This meaning is often used in plant and animal breeding, where hybrids are commonly produced and selected, because they have desirable characteristics not found or inconsistently present in the parent individuals or populations.↑ ↑ ↑ ↑
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