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Genetics and Biotech
| Question | Answer |
|---|---|
| Allele | One of a pair of genes that exist at the same location on a pair of homologous chromosomes and exert parallel control over the same genetic trait |
| cancer | any of a number of conditions characterized by rapid, abnormal, and uncontrolled division of affected cells |
| chromosome mutation | an alteration in the structure of a chromosome involving many genes |
| cloning | a technique of genetic investigation in which undifferentiated cells of an organism are used to produce new organisms with the same set of traits as the original cells |
| codon | a group of three nitrogenous bases that provide information for the placement of amino acids in the synthesis of proteins |
| deletion | a type of chromosome mutation in which a section of a chromosome is separated and lost |
| deoxyribonucleic acid (DNA) | a nucleic acid molecule known to be the chemically active agent of the gene -the fundamental hereditary material of living organisms |
| deoxyribose | a five-carbon sugar that is a component part of the nucleotide unit in DNA only |
| differentiation | the process by which embryonic cells become specialized to perform the various tasks of particular tissues throughout the body |
| dominance | a pattern of genetic inheritance in which the effects of a dominant allele mask those of a recessive allele |
| gene | a unit of heredity -a discrete portion of a chromosome thought to be responsible for the production of a single type of polypeptide (protein) -The factor responsible for the inheritance of a genetic trait |
| genetic engineering | the use of various techniques to move genes from one organism to another |
| genome | the total genetic makeup (DNA) of an organism |
| genotype | the particular combination of genes in an allele pair |
| heterozygous | a term used to refer to an allele pair in which the alleles have different, contrasting effects (for example Aa or RW or Rr) -A dominant and a recessive trait |
| homozygous | a term used to refer to an allele pair in which the alleles are identical in terms of effect (for example AA, aa, RR, rr) |
| messenger RNA (mRNA) | a type of RNA that carries the genetic code from the nuclear DNA to the ribosome for transcription |
| nucleic acid | an organic compound composed of repeating units of nucleotide |
| nucleotide | the repeating unit making up the nucleic acid polymer (for example RNA and DNA) |
| phenotype | the observable trait that results from the action of an allele pair |
| ribonucleic acid (RNA) | a type of nucleic acid that operates in various ways to facilitate protein synthesis |
| ribosome | a cell organelle that serves as the site of protein synthesis in the cell |
| transfer RNA (tRNA) | a type of RNA that transports specific amino acids from the cytoplasm to the ribosome for protein synthesis |
| four nitrogenous bases (DNA) | Adenine pairs with Thymine Cytosine pairs with Guanine |
| four nitrogenous bases (RNA) | Adenine pairs with Uracil Thymine pairs with Adenine Cytosine pairs with Guanine |
| karyotype | an enlarged photograph of the paired homologous chromosomes of an individual cell that is used in the detection of certain genetic disorders involving chromosome mutation |