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26 Cards in this Set
- Front
- Back
What is Alleles?
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One of a number of different forms of a gene.
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What is Codominance?
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Situation in which both alleles of a gene contribute to the phenotype,
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What is Crossing Over?
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Process in which honologous chromosomes exchange portions of the chromotid during meiosis.
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What is Phenotype?
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Physical characteristics of an organism.
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What is Diploid?
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Term used to refer to a cell that contains both sets of homologous.
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What is Alleles?
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One of a number of different forms of a gene.
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What is Codominance?
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Situation in which both alleles of a gene contribute to the phenotype,
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What is Crossing Over?
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Process in which honologous chromosomes exchange portions of the chromotid during meiosis.
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What is Phenotype?
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Physical characteristics of an organism.
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What is Diploid?
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Term used to refer to a cell that contains both sets of homologous.
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What is Haploid?
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Term used to refer to a cell that contains one set of chromosomes.
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What are Gametes?
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Cells involved in sexual reproduction.
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What is Heterozygous?
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Term used to describe an organism that has 2 different alleles for the same trait.
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What is Homologous?
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Term used to refer to chromosomes. Each have a corresponding chromosome for the opposite-sex parent.
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What are Chromosomes?
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Threadlike structure within the nucleus containing the genetic info.
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What is genotype?
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The genetic make-up of an organism.
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What is Hybrid?
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Offspring of crosses of parents with different traits.
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What is Incomplete Dominance?
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Situation in which 1 allele is not completely dominant over the other.
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What is Independent Assortment?
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Independent segregation of genes during the formation of gametes.
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What is Nondisjunction?
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Error is meiosis in which homologous chromosome fail to seperate. Example: Down's Syndrome
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What is Monosomy?
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When there is 1 absent member of a pair of chromosomes
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What is Trisomy?
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When there are 3 chromosomes, instead of the normal 2.
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What is a Pedigree? What can it determine?
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A pedigree is a chart (like a family tree) that shows relationships within a family. It shows the possible outcomes of traits in offspring.
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What are Polygenic Traits?
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Traits that are controlled by 2+ genes.
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What are Somatic Cells?
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Somatic cells make up the body of an organism.
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What is a Tetrad?
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A structure containing 4 chromotids that forms during meiosis.
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