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Genetic Laws/Defects
Honors Biology
Term | Definition |
---|---|
Trisomy 21 (chromosomes and syndrome) | 3 #21 chromosomes & = Down Syndrome |
XYY Syndrome (chromosome) | Extra #23 Y chromosome |
Trisomy 21 symptoms | Facial characteristics of Down syndrome & difficulty processing info in the brain |
XYY Syndrome symptoms | Taller/Hairier/Agressive- More Tesostrone |
Trisomy 16 (chromosome) | Extra X #16 chromosome |
Trisomy 16 symptoms | Miscarriage in first trimester pregnancy |
Monosomy X (chromosome & syndrome) | Missing #23 X chromosome &= Turner Syndrome (only occurs in girls) |
Klinefelter Syndrome (chromosome and side effects/symptoms) | Man has extra #23 X chromosome- can't have kids/ makes more estrogen |
Law is Segregation | Offspring inherits 2 copies of each gen, 1 from each parent -2 allels for a trait segregate (separate) hen gametes are formed. |
Law of Independent Assortment | Allels for different genes separate independently of each other during gametes formation (meiosis) |
Heredity | Passing of traits from parents to offspring |
Genetics | Science of hereidity |
Gregor Mendel | Austrain monk who laid important ground work for biological inherence (pea plants) |
Cross pollination | The combining of gametes from 2 separate plants |
Self pollinating | Occurs in nature with out human interference- cross pollination can be done by humans |
The Principal of Dominance | Dominant Gene trumpets recessive gene |
Tetrad | Homologous chromosomes connect together |
Crossing over | When a tetrad is formed they share info(crossing over) |
Nondijunction | Homologous chromosomes ( or chromotids) fail to separate |
Autosomal chromosomes | Stomatic |
Karyotype | Picture of someone's chromosomes |