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| the different forms of a gene |
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| an organism that always produces offspring witht he same form of a trait as the parent |
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| the scientific study of heredity |
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| an organism's physical appearance, or visible traits |
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| having two different alleles for a trait |
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| the process that occurs in sex cells (sperm and egg) by which the number of chromosomes is reduced by half |
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Definition
| RNA that coppies the coded message from DNA in the nucleus and carries the message into the cytoplasm |
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| an allele whose trait always shows up in the organism when the allele is present |
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| an organism that has two different alleles for a trait; an organism that is heterozygous for a particular trait |
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| a charachteristic that an organism can pass on to its offspring through its genes |
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| a segmant of DNA on a chromozome that codes for a specific trait |
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| the likelihood that a particular event will occur |
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| when the alleles for a specific trait are neither dominant or recessive. as a result, both alleles are expressed in the punnett square |
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| the stage of the cell during which the cell's nucleus divides into two nuclei and one copy of the DNA in distributed to each daughter cell |
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| deoxyribonucleic acid; the genetic material that carries info about an organism and is pased from parent to offspring |
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Definition
| RNA in the cytoplasm that carries an amino acid to the ribosome and adds it to the growing protein chain |
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| an allele that is masked when a dominant allele is present |
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Definition
| the passing of traits from parents to offspring |
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Definition
| an organism's genteic makeup, or allele combonations |
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| having two identical alleles for a trait |
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| a chart that shows all the possible combonations of alleles that can result from a genetic cross |
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| ribonucleic acid; a nucleic acid that plays an important role in the production of proteins |
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Definition
| a small grain-like structure in the cytoplasm of a cell where proteins are made |
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| a double rod of condensed chromatin; contains DNA that carries genetic info |
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