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Mendelian genetics concepts Flashcards

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2820961931Probabilitya number representing how likely it is that some future event will occur.0
2820961932Hereditythe passing of traits from parents to offspring (also called inheritance).1
2820961933Homologous chromosomeschromosomes that have the same sequence of genes and the same structure and pair during meiosis.2
2820961934Genea segment of DNA on a chromosome that codes for an inherited trait.3
2820961935Allelea different version of a gene.4
2820961936Traita characteristic of an organism that can be passed on to its offspring through its genes.5
2820961937Dominant traita trait that is always expressed and is observed in the first generation when parents that have different traits are bred.6
2820961938Recessive traita trait that is hidden by a dominant trait and reappears in the second generation when parents with different traits are bred.7
2820961939True-breedingsexually reproducing organisms that produce offspring with inherited traits identical to those of themselves (the parents).8
2820961940Parent generation (P1 generation)the starting generation in a breeding experiment.9
2820961941First generation (F1 generation)the set of offspring resulting from the breeding of the parent generation.10
2820961942Second generation (F2 generation)the set of offspring resulting from the breeding of the F1 generation.11
2820961943Geneticsthe branch of biology that studies heredity of traits in organisms.12
2820961944Law of segregationwhen sex cells (gametes) are formed, each gamete will receive one version of a gene (allele) or the other.13
2820961945Genotypethe genetic makeup of an organism for a particular trait represented by two letters (alleles).14
2820961946Homozygoushaving identical alleles at on both chromosomes.15
2820961947Heterozygoushaving two different alleles on chromosomes.16
2820961948Phenotypethe physical characteristic of a particular combination of alleles or genotype.17
2820961949Hybridthe offspring of parents with different traits.18
2820961950Monohybrid crossa genetic cross that evaluates one characteristic.19

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