cell reproduction
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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| gene | segment of DNA that transmits info. from parent to offsring
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| chromosome | rod shaped structure that forms when a single DNA molecule and its associated proteins coil tightly together before cell dividion
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| chromatid | the 2 copies of each chromasome
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| centromere | the point where the two chromatids are attached by a protein disk.
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| homogolous chromosomes | chromosomes that are simular in size, shape and genes that they carry.
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| diploid | cell containing two homologous of each chromosome
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| gametes | egg cells and sperm cells
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| haploid | cell contains only one homologue of each chromosome
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| zygote | fertilized egg cell
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| trisomy | condition in which adiploid cell has an extra chromosome
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| karyotype | collection of chromosomes found in an individuals' cells
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| Down syndrome | when an individual has an extra copy of chromosome 21
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| nondisjunction | accident in chromosome seperation when 1 daughter cell gets both chromosomes and the other daughter cell gets none
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| amniocentesis | procedure where sample of amniotic fluid is drawn and tested for genetic abnormalities
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| chorionic villi sampling | fetal testing procedure where pieces of chrionic villi in mom's uterus = removed and testes for abnormalities
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| mutations | changes in organisms genetic material
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| deletion | when a fragment of a cell breaks off and is lost when a cell divides
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| duplication | form of mutation where the chromosome contains an extra copy of a segment of DNA
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| inversion | mutation in which a chromosome fragment rejoins it's origional chromosome w/ its nucleotides reversed
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| translocation | form of mutation caused by a chromosome fragment joining a nonhomologous chromosome during cell division
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| autosomes | a chromosome not directly involved in determinating sex
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| sex chromosomes | chromosomes that differ between males and females
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
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Created by:
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