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| the transmission of traits from one generation to the next. |
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| differences between members of the same species. |
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| the scientific study of heredity and hereditary variation. |
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Definition
| a discrete unit of hereditary information consisting of a specific nucleotide sequence in dna |
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| a haploid reproductive cell, such as an egg or sperm. unite during sexual reproduction to produce a diploid zygote. |
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| a specific place along the length of a chromosome where a given gene is located. |
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| the generation of offspring from a single parent that occurs wihtout the fusion of gametes. In most cases, the offspring are genetically identical to the paretn. |
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| a lineage of genetically identical individuals or cells. |
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| a type of reproduction in which two parents give rise to offspring that have unique combinations of genes inherited from the gametes of the parents. |
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| any cell in a multicellular organism. |
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| a display of the chromosome pairs of a cell arranged by size and shape. |
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Definition
| a pair of chromosomes of the same length, centromere position and staining pattern that possesses genes for the same charachters at corresponding loci. |
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Definition
| a chromosome that is not directly involved in determining sex. |
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Definition
| a cell containing 2 sets of chromosomes, one set from each parent. |
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| chromosome responisble for determining the sex of an individual |
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Definition
| the union of haploid gametes to produce a diploid zygote. |
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Definition
| the diploid product of the union of haploid gametes during fertilization, fertilized egg. |
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Definition
| a modified type of cell division in sexually reproducing organisms, 2 rounds of cell division. Results in cells with half the number of chromosome sets as the original cell. |
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Term
| alternation of generations |
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Definition
| a life cycle in which there is both a multicellular diploid from the sporophyte, and a multicellular haploid form. |
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Term
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Definition
| in organisms, that have alt. of gen. the multicellular diploid form that results from the union of gametes |
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Definition
| in organisms that have alt. of gen. the multicellular haploid form that produces haploid gametes by mitosis. |
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Definition
| the pairing and physical connection of replicated homologous chromosomes during prophase 1 of meiosis. |
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Definition
| the reciprocal exchange of genetic material between nonsister chromatids during prophase 1 of meiosis. |
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Definition
| the x-shaped, microscopically visible region where homologous sister chromatids have exchanged genetic material thorugh crossingover during meiosis. |
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Definition
| a chromosome creatd when crossing over combines the dna from 2 parents into a single chromosome. |
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