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| All eukaryotic cells DO NOT have |
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| If a mucle cells of an organisms contains 24 chromosomes, the organism's egg cells would contain ___ chromosomes |
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| Of the following phases of mitosis, which 2 are essentially opposite in terms of nuclear changes |
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| It is difficult to observe individual chromosomes during interphase b/c, they are |
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Definition
| uncoiled to form long, thin strands |
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Term
| the chromatids of each chromosome are separated happens in ____ but not ____ |
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| The 2 genes are both on different chromosomes but at the same positions is the most likely explanation for |
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Definition
| high rate of crossing over b/t 2 genes. |
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| ____ does not contribute to genetic variation |
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| Purpose of meiosis is to produce ____ needed for ____ |
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Definition
| gametes.... sexual reproduction |
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Term
| There are ___ haploid cells that contain both ____ and ___ chromosomes |
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| How many pairs of autosomes do human somatic cells contain |
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| _____ does NOT occur during the process of synapsis |
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Definition
| sister chromatids separate |
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Term
| The chromosomal abnormality called trisomy, which causes down syndrome in humans is caused by |
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Definition
| nondisjunction of chromosome 21 |
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Term
| In mitosis, the events of G1 S G2 M are followed by |
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| With the exception of identical twins, siblings who have the same biological parents are likely to look similar, but not identical to each other b/c they have _____ |
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Definition
| similar but not identical combinations of genes. |
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