ch 14 Gen. Bio
104658350 | Character | an observable heritable feature | 0 | |
104658351 | trait | genetically determined variant of a characteristic | 1 | |
104658352 | True Breeding | Plants that produce offspring of the same variety when they self-pollinate. | 2 | |
104658353 | hybridization | mating or crossing of two true-breeding varieties | 3 | |
104658354 | P Generation | parental generation, the first two individuals that mate in a genetic cross, studies in inheritance. P = parental . | 4 | |
104658355 | F1 Generation | The first filial, or hybrid, offspring from P generation in a genetic cross-fertilization. | 5 | |
104658356 | F2 generation | Offspring resulting from interbreeding of the hybrid F1 generation. Second filial generation. | 6 | |
104658357 | alleles | alternative versions of a gene that produce distinguishable phenotypic effects variation in inherited character | 7 | |
104658358 | Dominant allele | In a heterozygote, the allele that is fully expressed in the phenotype. | 8 | |
104658359 | Recessive allele | an allele whose phenotypic effect is not observed in a heterozygote | 9 | |
104658360 | Law of Segregation | Mendel's first law, stating that each allele in a pair separates into a different gamete during gamete formation. | 10 | |
104658361 | Punnett Square | A diagram used in the study of inheritance to show the results of random fertilization. | 11 | |
104658362 | Homozygous | having two identical alleles for a given gene | 12 | |
104658363 | Heterozygous | having two different alleles for a given gene | 13 | |
104658364 | phenotype | The physical traits that appear in an individual as a result of its gentic make up. | 14 | |
104658365 | Genotype | genetic makeup of an organism; an organism's combination of alleles | 15 | |
104658366 | Test Cross | breeding of an organism of unknown genotype w/ a homozygous recessive individual to determine the unknown genotype | 16 | |
104658367 | Monohybrids | an organism that is heterozygous in a single gene, results from a cross of two different parents | 17 | |
104658368 | dihybrids | the crossing of two true breeding parents differing in two characters that produce heterozygous for both characters | 18 | |
104658369 | Law of independent assortment | Mendel's law stating that pairs of genes during gamete formation separate independently of one another in meiosis | 19 | |
104658370 | Complete dominance | The situation in which the phenotypes of the heterozygote and dominant homozygote are indistinguishable | 20 | |
104658371 | Incomplete dominance | The situation in which the phenotype of heterozygotes is intermediate between the phenotypes of individuals homozygous for either allele | 21 | |
104658372 | Codomance | The situation in which the phenotype of both alleles are exhibited in the heterozygous because both alleles affect the phenotype in separate, distinguishable ways. | 22 | |
104658373 | Pleiotropy | A single gene having multiple effects on an individuals phenotype | 23 | |
104658374 | Epistasis | A type of gene interaction in which one gene alters the phenotypic effects of another gene that is independently inherited. | 24 | |
104658375 | Quantitative Characters | A heritable feature in a population that varies continuously as a result of environmental influences and the additive effect of two or more genes (polygenic inheritance). | 25 | |
104658376 | Polygenic inheritance | An additive effect of two or more gene loci on a single phenotypic character. | 26 | |
104658377 | Norm of reaction | The range of phenotypes produced by a single genotype, due to environmental influences. | 27 | |
104658378 | Multifactorial | Many factors, both genetic and environmental, collectively influence phenotype. | 28 | |
104658379 | Pedigree | a family history that shows how a trait is inherited over several generations | 29 | |
104658380 | Carriers | Heterozygotes who carry a recessive trait for an inherited disorder and therefore, may transmit the allele to their offspring | 30 | |
104658381 | Behavior of recessive alleles | Albinism loss of color,Cystic Fibrosis of European descents, and sickle cell African Americans low blood cells | 31 | |
104658382 | Behavior of Dominant alleles | Huntington"s Disease Death btwn 35-40, Achondroplasia Dwarfism | 32 |