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PBS Vocab 2.2 & 2.3
Term | Definition |
---|---|
alleles | One of two or more DNA sequences occurring at a particular gene locus. |
autosomes | one of the numbered chromosomes, as opposed to the sex chromosomes |
benign | a condition, tumor, or growth that is not cancerous |
centromere | the region where the cell's spindle fibers attach. |
chromatid | one of the two identical halves of a chromosome that has been replicated in preparation for cell division |
chromosome | A structure found inside the nucleus of a cell |
deletion mutation | A type of genetic change that involves the absence of a segment of DNA. |
DNA | The molecule inside cells that contains the genetic information responsible for the development and function of an organism. |
dominant allele | the relationship between two versions of a gene |
eukaryotic | Eukaryotes are organisms whose cells have a nucleus. |
Familial Hypercholesterolemia | can be caused by inherited changes (mutations) in the LDLR, APOB, and PCSK9 genes, which affect how your body regulates and removes cholesterol from your blood |
frameshift mutation | An insertion or deletion involving a number of base pairs that is not a multiple of three, which consequently disrupts the triplet reading frame of a DNA sequence. |
gene | the basic physical and functional unit of heredity. |
genome | The complete set of DNA (genetic material) in an organism. |
genotype | the genetic makeup of an organism |
gestational diabetes | a condition in which a hormone made by the placenta prevents the body from using insulin effectively. |
heterozygous | The presence of two different alleles at a particular gene locus |
homologous chromosomes | Two chromosomes in a pair – normally one inherited from the mother and one from the father. |
homozygous | The presence of two identical alleles at a particular gene locus. |
insertion mutation | A type of genetic change that involves the addition of a segment of DNA. |
karyotype | an individual's complete set of chromosomes. |
magnetic resonance imaging (MRI) | medical imaging technique used in radiology to form pictures of the anatomy and the physiological processes of the body. |
malignant | A term used to describe cancer |
meiosis | A special form of cell division in which each daughter cell receives half the amount of DNA as the parent cell. |
messenger RNA (mRNA) | type of single-stranded RNA involved in protein synthesis |
metastasis | The spread of cancer cells from the place where they first formed to another part of the body. |
mitosis | a part of the cell cycle in which replicated chromosomes are separated into two new nuclei. |
mutation | a change in the DNA sequence of an organism |
Nondisjunction | the failure of the chromosomes to separate, which produces daughter cells with abnormal numbers of chromosomes |
nucleotides | A molecule consisting of a nitrogen-containing base (adenine, guanine, thymine, or cytosine in DNA; adenine, guanine, uracil, or cytosine in RNA), a phosphate group, and a sugar (deoxyribose in DNA; ribose in RNA). |
pedigree | shows relationships between family members and indicates which individuals have certain genetic pathogenic variants, traits, and diseases |
phenotype | The observable characteristics in an individual resulting from the expression of genes |
plan of care | how a medical professional plans to treat a patient |
point mutation | A genetic alteration caused by the substitution of a single nucleotide for another nucleotide. |
polymerase chain reaction | a specific class of enzyme found in all living organisms |
prognosis | The likely outcome or course of a disease; the chance of recovery or recurrence |
protein | A molecule made up of amino acids. |
protein synthisis | the process in which cells make proteins. |
punnet square | a table in which all of the possible outcomes for a genetic cross between two individuals with known genotypes are given |
recessive allele | A type of allele that when present on its own will not affect the individual |
restriction enzyme | a protein isolated from bacteria that cleaves DNA sequences at sequence-specific sites, producing DNA fragments with a known sequence at each end. |
ribonucleic acid (RNA) | a nucleic acid present in all living cells that has structural similarities to DNA. |
sex chromosomes | a type of chromosome involved in sex determination. |
silent mutation | when the change of a single DNA nucleotide within a protein-coding portion of a gene does not affect the sequence of amino acids that make up the gene's protein. |
ultrasound imaging | A procedure that uses high-energy sound waves to look at tissues and organs inside the body. |