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Genetics and Heredity Question & Answers

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Allele - ANSWER: Different forms of a gene, typically represented by letters. Organisms that reproduce sexually have two alleles for every trait, one from each parent. Chromosomes - ANSWER: threadlike structures made of DNA molecules that contain the genes Codominance - ANSWER: A condition in which both alleles for a gene are fully expressed (WW=white, BB=black, WB=speckled) complete dominance - ANSWER: a relationship in which one allele is completely dominant over another (T dominates t) dihybrid cross - ANSWER: Cross or mating between organisms involving two pairs of contrasting traits...........................

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Genetics and Heredity Question & Answers Allele - ANSWER: Different forms of a gene, typically represented by letters. Organisms that reproduce sexually have two alleles for every trait, one from each parent. Chromosomes - ANSWER: threadlike structures made of DNA molecules that contain the genes Codominance - ANSWER: A condition in which both alleles for a gene are fully expressed (WW=white, BB=black, WB=speckled) complete dominance - ANSWER: a relationship in which one allele is completely dominant over another (T dominates t) dihybrid cross - ANSWER: Cross or mating between organisms involving two pairs of contrasting traits DNA - ANSWER: A complex molecule containing the genetic information that makes up the chromosomes. (deoxyribonucleic acid) Dominant Allele - ANSWER: An allele whose trait always shows up in the organism when the allele is present Fertilization - ANSWER: The joining of a sperm cell (male sex cell) and an egg cell (female sex cell) Gene - ANSWER: The set of information that controls a trait; a segment of DNA on a chromosome that codes for a specific trait. Genetics - ANSWER: The study of heredity Genotype - ANSWER: An organism's genetic makeup, or allele combinations.

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