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Ch 6 Test C
Ch 6 Test C

... Use the terms from the following list to complete the sentences below. Each term may be used only once. Some terms may not be used. ...
genetics study guide
genetics study guide

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... 7. Fertilization — fusion of male and female gametes 8. Gamete — male and female sex cells, sperm and eggs 9. Genetic recombination — major source of genetic variation among organisms caused by reassortment or crossing over during meiosis 10. Genetics — branch of biology that studies heredity 11. Ge ...
Using a HMM to Identify Ectopic Gene Conversion Events
Using a HMM to Identify Ectopic Gene Conversion Events

... The divergence time between duplicate genes is estimated using sequence divergence which can be greatly affected by the presence of gene conversions. An ectopic gene conversion event causes the sequence of one duplicate to overwrite the other, thereby removing any nucleotide sequence divergence pres ...
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... Eukaryotic Gene Regulation In many eukaryotes, a short region of DNA containing the base sequence TATATA or TATAAA is known as the TATA box. The TATA box marks the beginning of a gene. It also helps position the RNA polymerase. When RNA polymerase binds in the correct position, transcription can oc ...
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... allowing annealing of the primers to the single-stranded DNA template. Stable DNADNA hydrogen bonds are only formed when the primer sequence very closely matches the template sequence. The polymerase binds to the primer-template hybrid and begins DNA formation. Extension/elongation step: commonly a ...
Crossing Over and Gene Mapping
Crossing Over and Gene Mapping

... chromosome and about the distances between those genes. This reasoning depends on this basic principle: • To a first approximation, crossovers are equally likely to occur at any point along the length of a chromosome. It follows that: • the probability of a crossover between two genes is proportiona ...
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Sex chromosomes, dosage compensation, and aneuploidy

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Applications for Toxicogenomics in Risk Assess

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Section 11-3 - Pearson School
Section 11-3 - Pearson School

... A Summary of Mendel’s Principles (page 272) 12. Circle the letter of each sentence that is true about Mendel’s principles. a. The inheritance of biological characteristics is determined by genes that are passed from parents to their offspring. b. Two or more forms of the gene for a single trait can ...
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Heredity Inherited Traits - Saint Mary Catholic School

... • The gametes are the sex cells of the parents. When formed they undergo meiosis. In the process, the chromosomes are duplicated, then separated and packaged as separate sets in the sex cells. • If this were not the case, the number of chromosomes would double every time a new organism was created. ...
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PPT - Med Study Group

... chromosomal regions that have been associated with a complex trait • If a QTL is correct then one of the genes residing in this region should be directly involved in causing trait Remember – More than one gene! therefore – more than one QTL too ...
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... No. The two genes are unlikely to be separated by crossing over, so they will be inherited together. 4. Which does sexual reproduction create; new alleles or new combinations of alleles? New combinations of alleles 5. How is the production of unique genetic combinations an advantage to organisms and ...
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Meiosis and Mendel

... E. Heredity patterns can be calculated with probability 1. probability - the likelihood that a particular event will happen 2. Probability applies to random events such as meiosis and fertilization ...
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Gene Section FGA7 (Fused Gene 7 to AML1) in Oncology and Haematology

... Metaphase FISH analysis using the BAC probe RP11-104M2 hybridized to the patient's metaphase shows one normal green signal on the intact chromosome 4 (dashed arrow) and two smaller green signals on der(21) (arrowhead) and on der(4) (arrow) as a result of the t(4;21)(q28;q22). ...
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Genomic imprinting

Genomic imprinting is the epigenetic phenomenon by which certain genes are expressed in a parent-of-origin-specific manner. If the allele inherited from the father is imprinted, it is thereby silenced, and only the allele from the mother is expressed. If the allele from the mother is imprinted, then only the allele from the father is expressed. Forms of genomic imprinting have been demonstrated in fungi, plants and animals. Genomic imprinting is a fairly rare phenomenon in mammals; most genes are not imprinted.In insects, imprinting affects entire chromosomes. In some insects the entire paternal genome is silenced in male offspring, and thus is involved in sex determination. The imprinting produces effects similar to the mechanisms in other insects that eliminate paternally inherited chromosomes in male offspring, including arrhenotoky.Genomic imprinting is an inheritance process independent of the classical Mendelian inheritance. It is an epigenetic process that involves DNA methylation and histone methylation without altering the genetic sequence. These epigenetic marks are established (""imprinted"") in the germline (sperm or egg cells) of the parents and are maintained through mitotic cell divisions in the somatic cells of an organism.Appropriate imprinting of certain genes is important for normal development. Human diseases involving genomic imprinting include Angelman syndrome and Prader–Willi syndrome.
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