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Meiosis - My Haiku
Meiosis - My Haiku

... genes in sexual reproduction results in a great variety of possible gene combinations from the offspring of any two parents. Recognize that genetic variation can occur from such processes as crossing over, jumping genes, and deletion and duplication of genes. ...
How to Make a Linkage Map
How to Make a Linkage Map

... How to Make a Linkage Map  Independent assortment occurs when genes/ chromosomes separate from each other independently  during meiosis and therefore are inherited separately from each other. This is true if the genes for the  observed phenotypes are found on different chromosomes or separated by la ...
Extending Mendelian Genetics PowerPoint
Extending Mendelian Genetics PowerPoint

... 3. Human blood type is example of codominance a. Also has 3 different alleles- trait also considered a multiple-allele trait b. When alleles are neither dominant of recessive (in both incomplete and codominance) use upper case letters with either subscripts or superscripts) ...
Sect 10.2
Sect 10.2

... ◦ homozygous green, wrinkled seed plant ◦ the P genotypes would be ‘YYRR’ and ‘yyrr’ ◦ the F1 gen’s genotype would be ...
Chapter 24
Chapter 24

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Molecular Ecology
Molecular Ecology

... By choosing both the nitrogen fixation-related gene nifH and the nodulation-related gene nodC, Bontemps et al. (2010) clearly separated the two symbiotic functions. Many bacteria fix nitrogen without nodulating their host, and nif genes are found in a number of unrelated bacterial groups. However, n ...
Dominant Recessive
Dominant Recessive

... 1. Genes, segment of DNA, occurs in pairs, controll heredity. Visual form called alleles. (noted as “factors”) 2. Found that some of the alleles are dominant and some are recessive. 1. Dominant trait always uppercase (TT, Tt) 2. Recessive always lowercase (tt) ...
We found evidence for rapid evolution in grassland species at both a
We found evidence for rapid evolution in grassland species at both a

... We would like to thank the SNF for funding and the ESF Congenomics Network for a travel grant. The bioinformatics was performed by Thomas van Gurp. A big thanks goes to D. Trujillo, M. Furler and D. Topalovic for technical assistance in the greenhouse and field. We are also grateful to N. Castro. E. ...
Probability and Punnett Square PPT
Probability and Punnett Square PPT

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Name Period ______ Date ______ Outcome Score 5.3 5.4 6.1
Name Period ______ Date ______ Outcome Score 5.3 5.4 6.1

... 2. The gene for black coat color is dominant in guinea pigs. How is homozygous black different from heterozygous black, even though the guinea pigs look alike? 3. When two hybrid animals are crossed, there appear among the offspring homozygous dominant, heterozygous and homozygous recessive individu ...
What are chromosomes?
What are chromosomes?

... Along each chromosome there are many dark bands. Each band genes, many are many, small part of a chromosome called a gene. There of an at least one million in every nucleus. Genes determine the traits organism. the There are genes for height, genes for nose size and shape, genes for any color of hai ...
Gene – Sequence of DNA that codes for a particular protein or trait
Gene – Sequence of DNA that codes for a particular protein or trait

...  The Y chromosome carries few genes  Only one X chromosome functions in each cell Klinefelter Syndrome (XXY) – Small testes, sterile, some female body characteristics (ex. breast enlargement) Also XX+Y+: XXYY, XXXY, XXXXY ...
CBOL Protist Working Group: Barcoding Eukaryotic
CBOL Protist Working Group: Barcoding Eukaryotic

... evolved but before plants, animals, or fungi appeared on Earth. Given their single-celled nature, discovering and describing new species has been difficult, and many protistan lineages contain a relatively small number of formally described species (Figure 1A), despite the critical importance of sev ...
Heredity
Heredity

... of heredity through his experiments breeding pea plants and noticing which traits were passed from parent to offspring Mendel’s work was unknown during his lifetime, but was rediscovered during the early 1900s Mendel is known as the Father of Genetics ...
An Inordinate Fondness? The Number, Distributions, and Origins of
An Inordinate Fondness? The Number, Distributions, and Origins of

... equivalent. Molecular sequence data show that some diatom species are ubiquitously dispersed. A good case can be made that at least some diatom species and even a few genera are endemics, but many such claims are still weak. The combination of very large species numbers and relatively rapid dispersa ...
Chapter 14: Mendel and the Gene Idea
Chapter 14: Mendel and the Gene Idea

... provides an understanding of the pattern of passage (transmission) of genes from parent to offspring (14.1-14.4). 4.c.2 – Environmental factors influence the expression of the genotype in an organism – ...
Genetics and Inheritance
Genetics and Inheritance

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Unit 2
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... genotype of an offspring. Codominance occurs when both alleles in a heterozygous individual are expressed equally (i.e., when two traits are equal). Let’s explore blood typing. In humans, blood type is determined by alleles that are condominant (IA and IB) and the allele i which is recessive to IA a ...
Olympiads | Homi Bhabha Centre for Science Education
Olympiads | Homi Bhabha Centre for Science Education

... any oxidative stress in the cell. The antimalarial drug Primaquine is known to induce formation of H2O2 and other reactive oxygen species. Fava beans are also known to contain a chemical which is responsible for raising the concentration of reactive oxygen species. Glucose-6-phosphatedehydrogenase ( ...
The Pre-Mendelian Era and Mendelism
The Pre-Mendelian Era and Mendelism

... dwarf plants appeared in F2 in the proportion of 2.84 : 1 which is roughly equal to 3 : 1. When he performed the reciprocal cross by reversing the sexes of the parents, the same results were obtained showing thereby that it did not matter which plant was used as male or as female parent. Similarly, ...
Meiosis II - Cloudfront.net
Meiosis II - Cloudfront.net

... Genes are passed from parents to their offspring. 2. In cases in which two or more forms (alleles) of the gene for a single trait exist, some forms of the gene may be dominant and others may be recessive. 3. In most sexually reproducing organisms, each adult has two copies of each gene – one from ea ...
Mendel and Genetics
Mendel and Genetics

... Genes for different traits (Pea color, and flower color) are inherited independently of ...
Chapter 10: Meiosis and Sexual Life Cycles
Chapter 10: Meiosis and Sexual Life Cycles

... daughter cells at the end of meiosis I are haploid. Remember this! ...
Unit 4 Review PPT - Pikeville Independent Schools
Unit 4 Review PPT - Pikeville Independent Schools

... b) several human disorders occur as a result of defects in meiosis. Identify one and explain how this could have occurred. ...
HANDOUT: Genetics Prob Set #2
HANDOUT: Genetics Prob Set #2

... 2) In pea plants, round seed shape (R) is dominant over wrinkled (r). Write the genotype and phenotype for a plant that is: a) heterozygous (hybrid): b) homozygous dominant (pure): c) homozygous recessive (pure): 3) Find the genotype and phenotype ratios expected from crossing two heterozygous plant ...
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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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