Heredity
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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DNA | 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 a cell divisions
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mitosis | in eukaryotic cells, a process of cell divisions that form two new nuclei, each of which has the same number of chromosomes
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cytokinesis | the division of the cytoplasm of a cell
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asexual reproduction | the 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 the 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 form a zygote
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heredity | the passing of genetic material from parent to offspring
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gene | one set of instruments for an inherited trait
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allele | one of the alternative forms of a gene that governs a characteristic, such as hair color
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genotype | the entire genetic makeup 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 | 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 in which two alleles are expressed such that phenotype of a heterozygous individual is a combination of the phenotypes of the two homozygous parents.
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punnet square | a graphic used to predict the result of a genetic cross.
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probability | the likelihood that a possible 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 a genetic trait in several generations of a family.
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Created by:
BellaRamos
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