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Dragon Genetics! (Day 1)
Dragon Genetics! (Day 1)

... In this activity you will create an imaginary dragon based on the environment and the genes that are inherited! 1) Study the dragon traits below and be ready to create your own amazing dragon! 2) Flip a coin for each trait. Write down both alleles and the genotype and phenotype. Heads = dominant, Ta ...
In Silico Mapping of Complex Disease
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Sem 1 Revision Chem and Biol File
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Additional Glossary and Concepts List for Vertebrate Genetics
Additional Glossary and Concepts List for Vertebrate Genetics

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Module B1a, topic 1 Food chains eg grass → rabbit → fox producer
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... and your mate are both heterozygous (Aa). This disease only afflicts those who are homozygous recessive (aa). The Punnett square below makes it clear that at each birth, there will be a 25% chance of you having a normal homozygous (AA) child, a 50% chance of a healthy heterozygous (Aa) carrier child ...
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Edvotek Kit #116: Genetically Inherited Disease Detection Using Pre
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... Sickle Cell results from a Point Mutation on the short arm of chromosome 11. A single nucleotide polymorphism (SNP) between an A to T results in a new amino acid in the sixth position of the beta chain of hemoglobin in red blood cells. In normal hemoglobin (Hb A), glutamic acid (Glu) is present. In ...
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Dominance (genetics)



Dominance in genetics is a relationship between alleles of one gene, in which the effect on phenotype of one allele masks the contribution of a second allele at the same locus. The first allele is dominant and the second allele is recessive. For genes on an autosome (any chromosome other than a sex chromosome), the alleles and their associated traits are autosomal dominant or autosomal recessive. Dominance is a key concept in Mendelian inheritance and classical genetics. Often the dominant allele codes for a functional protein whereas the recessive allele does not.A classic example of dominance is the inheritance of seed shape, for example a pea shape in peas. Peas may be round, associated with allele R or wrinkled, associated with allele r. In this case, three combinations of alleles (genotypes) are possible: RR, Rr, and rr. The RR individuals have round peas and the rr individuals have wrinkled peas. In Rr individuals the R allele masks the presence of the r allele, so these individuals also have round peas. Thus, allele R is dominant to allele r, and allele r is recessive to allele R. This use of upper case letters for dominant alleles and lower caseones for recessive alleles is a widely followed convention.More generally, where a gene exists in two allelic versions (designated A and a), three combinations of alleles are possible: AA, Aa, and aa. If AA and aa individuals (homozygotes) show different forms of some trait (phenotypes), and Aa individuals (heterozygotes) show the same phenotype as AA individuals, then allele A is said to dominate or be dominant to or show dominance to allele a, and a is said to be recessive to A.Dominance is not inherent to an allele. It is a relationship between alleles; one allele can be dominant over a second allele, recessive to a third allele, and codominant to a fourth. Also, an allele may be dominant for a particular aspect of phenotype but not for other aspects influenced by the same gene. Dominance differs from epistasis, a relationship in which an allele of one gene affects the expression of another allele at a different gene.
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