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30 Cards in this Set
- Front
- Back
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mitosis and cytoplasmic division function in the?
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asexual reproduction, and gametes formation in prokaryotes
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A duplicated chromosome has ____ chromadis?
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two
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in a chromosome, a _____ is a constricted region with attachment sites for microtubules?
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centromere
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a somatic cell having 2 of each type of chromsome has an _____ chromosome number?
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diploid
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interphase is the part of the cell cycle when _________?
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a cell grows and duplicates its DNA
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after mitosis, the chromosome number of a daughter cell is _____ the parents cell?
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the same as
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only ____ is not a stage of mitosis?
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interphase
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what happens in metaphase?
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all duplicated chromosomes are aligned at the spindle equator
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what happens in prophase?
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chromosomes start to condense
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what happens in telophase?
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chromosomes decondense and daughter nuclei form
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what happens in Anaphase?
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sister chromatids move apart
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sexual reproduction requires?
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fertilization
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An animal cell having 2 rather then 1 of each type of chromosome has a ______ chromosome number?
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diploid
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Generally a pair of homologous chromosomes _____?
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carries the same genes, have the same length and shape, and interact in meiosis
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meiosis ______ the parental chromosome number.
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reduces
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Meiosis in a division muchanism that produces _____?
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4 nuclei
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before the onset of meiosis, all chromosomes are _______?
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duplicated
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Duplicated chromosomes move away from their homologue and end up at the opposite spindle pole during________?
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anaphase 1
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sister chromatids of each duplicated chromosome move apart and end up at opposite sindle poles during _____?
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anaphase 2
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a chromosome number is?
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sum of all chromosomes in all cells of a given type
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alleles are?
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difffernt molecular forms of the same gene
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Metaphase 1 is?
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pairs of homologous chromosomes are now aligned at the spindle equator
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what is interphase?
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none between miosis 1 and 2
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a heterozygote has a _____ for the trait being studied.
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pair of nonidentical alleles
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the observable trait of an organism is its ____?
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phenotype
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second generation offsprings from a croos are the _____?
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hybrid generation
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a karyotype is?
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number of defining features of an individuals metaphase chromosomes
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what is translocation
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chromosome segment moves to a nonhomologous chromosome
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what is a linkage group
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all genes of a given chromosome
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what is nonjustification?
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causes gametes to have abnormal chromosome numbers
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