B1 Key Words

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Biology (B1) Karteikarten am B1 Key Words, erstellt von gatha.jayamohan am 15/01/2014.
gatha.jayamohan
Karteikarten von gatha.jayamohan, aktualisiert more than 1 year ago
gatha.jayamohan
Erstellt von gatha.jayamohan vor fast 11 Jahre
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Nucleus Controls what happens inside the cell
Chromosomes Rod shaped bodies that contain DNA, found in the nucleus 23 pairs
DNA (Deoxyribonucleic Acid) Material carrying genetic information, found in the nucleus.
Gene The basic unit of genetic material, inherited from our parents. A section of a chromosome
Allele Different versions of the same gene
Ovaries Pair of organs in the female reproductive system, producing eggs (ova) and sex hormones
Antibiotics Substances that kill bacteria
Dominant (allele) An allele that expresses itself whether partnered with a recessive or another dominant allele.
Recessive (Allele) An allele that is suppressed by a dominant one.
Gene Therapy Treating/preventing disease by introducing/replacing specific genes
Embryo The developing human offspring in the womb
Clone An organism that is genetically identical to it's parent -bacteria, some animals -plants - runners/plantlets/ug food storage organs
Homozygous 2 of the same allele. Either two recessive or two dominant.
Hetrozygous Two mismatching alleles. Dominant+Recessive
Genotype Our genetic make up (combination of alleles)
Phenotype A characteristic of an organism
Asexual Reproduction No sex, 1 parent=clone -no fusion of gametes/genetic info
Enzymes biological catalysts
Variation Difference between individuals (environmental or genetic)
Cystic Fibrosis recessive -thick sticky mucus in lungs :antibiotics-infections, physiotherapy-congestion
Huntington's Disorder dominant -tremors, clumsiness, mood changes, memory loss, inability to concentrate
Ante/prenatal testing analyse DNA before birth -cannot detect all inherited disorders -high chance of inheritance: down's syndrome
Neonatal testing Just after birth detects early treatable disorders
Pre-implantation genetic diagnosis PGD -embryos before implantation -eggs fertilised in dish (IVF) -tested, filtered, implanted
Carrier Testing -identify recessive allele carriers
Predictive Testing -detect possible developments of genetic disorders
False Positive say there is when there isn't -abortions?
False Negative there isn't when there is -continued pregnacy
Access to genetic profiles for employers -predict sick leave to determine employment
Access genetic profiles for insurance companies -life expectancy -deny service/increase cost
Stem Cells embryonic- develop into any type adult - develop into most uses: brain cells, cartilage, bones, immune systems, heart valves
Therapeutic Cloning foreign cells-rejected own cells-cloned -embryo-stem cells nucleus from egg+n from patients cell, simulated to form embryo, contained w/warm nutrients, treated to develp as necessary
Embryo Transplants developing embryo removed, pre specialisation cells seperated, grown, implanted offspring-identical to eachother and original mother
Fusion cell cloning replace nucleus of unfertilised egg (A) cell w/ another (B), implanted in 3rd baby=identical to donor (B
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