Unit Heredity
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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DNA | deoxyribonucleic acid, a molecule that is present in all living cells and that contains the information that determines the traits that a living thing inherits and needs to live
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Chromosomes | in a eukaryotic cell, one of the structures in the nucleus that are made up of DNA and protein; in a prokaryotic cell, the main ring of DNA
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Cell Cycle | the life cycle of a cell
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Interphase | the period of the cell cycle during which activities such as cell growth and protein synthesis occur without visible signs of cell division
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Mitosis | in eukaryotic cells, a process of cell division that forms two new nuclei, each of which has the same number of chromoksomes
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Cytokinesis | the division of the cytoplasm of a cell
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Homologous Chromosomes | chromosomes that have the same sequence of genes and and the same structure
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Meiosis | a process in cell division during which the number of chromosomes to half the original number by two divisions of the nucleus, which results in the production of sex cells
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Asexual Reproduction | reproduction that does not involve the union of sex cells and in which one parent produces offspring that are genetically identical to the parent
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Sexual Reproduction | reproduction in which two sex cells from two parents unite to produce offspring that share traits from both parents
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Fertilization | the union of a male and female gamete to from a zygote
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Heredity | the passing of genetic material from parent to offspring
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Gene | one set of instructions of inherited trait
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Allele | one of the alternative forms of a gene that governs a characteristic
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Genotype | the entire genetic make-up of an organism; also the combination of genes for one or more specific traits
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Phenotype | an organism's appearance or other detectable characteristics
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Dominant | in genetics, describes an allele that is fully expressed whenever the allele is present in an individual
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Recessive | describes an allele that will be masked unless the organism is homozygous for the trait
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Incomplete Dominance | a condition in which two alleles are expressed such that the phenotype of a heterozygous individual is an intermediate of the phenotypes of the two homozygous parents
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Codominance | a condition which two alleles are expressed such that the phenotype of a heterozygous individual is a combination of the phenotypes of the two homozygous parents
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Punnett Square | a graphic used to predict the results of a genetic cross
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Probability | the likelihood that a future event will occur in any given instance of the event
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Ratio | a comparison of two numbers using division
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Pedigree | a diagram that shows the occurrence of genetic trait in several generations of a family
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Created by:
Cressida
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