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19 Cards in this Set
- Front
- Back
What is transformation?
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Heritable change in a cell or an organism brought about by exogenous DNA.
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In ______, receptor sites on bacteria take up DNA from their environment and single strands are incorporated into te genome.
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Transformation, a process of gene transfer.
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___________ must be activated along with proto-oncogenes to halt cell division.
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Oncogenes
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The mutation that causes cystic fibrosis is usually due to a deletion of _____ amino acid, ___________________.
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one: phenylalanine
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What does cystic fibrosis affect?
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Affects pancreas, lungs, reproductive organs, liver.
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Meselson and Stald were the scientists that discovered that ______________.
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Discovered that DNA replication is semi-conservative.
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Two consensus DNA sequences that exist upstream from coding regions of some eukaryotic genes are _____________.
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TATA and CAAT
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What is the function of eukaryotic transcription factors?
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Recognize sequences within the enhancer and promotor regions and activate transcription.
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A cDNA library is ____.
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A library created using poly A containing mRNA molecules from a certain cell type.
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In what process does this sequence occur:
DNA replication; crossing-over; independent assortment; sister chromatids pulled apart |
gamete production
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nucleosomes
H2A, H2B, H3 & H4 histones & DNA |
The DNA of eukaryotes is organized into repeating interactions with protein octomers called ______. These are made up of _____ molecules.
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Polygenic or quantitative inheritance
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many genes influence the development of a characteristic in plants, such as height
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polygenic/quantitative traits are hard to study because
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the genes involved rarely contribute equally to the trait, and the environment affects trait expression
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what is the chance of a couple, both heterozygous for a recessive allele a, having two of three children that are aa?
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9/64
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How many hydrogen bonds would form between the DNA sequence ATTG and its complement on the other strand of the double helix?
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9: A and T are connected by two hydrogen bonds. G and C are connected by three hydrogen bonds.
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Repetitive DNA reanneals more _____ than unique sequences during hybridization experiments.
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more quickly
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T/F: Repetitive DNA is coding.
It's found in telomeres and centromeres. |
F Repetitive DNA is non-coding.
It is found in ________. |
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Alu sequences represent ________.
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Repetitive DNA is represented by _______ sequences in humans.
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In 1964, _____________ used the triplet binding assay to determine specific coding assignments.
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Nirenber and Leder trapped a complex of charged tRNA, RNA triplet and ribosome on a nitrocellulose filter for ________.
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