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Genetic Laws/Defects

Honors Biology

TermDefinition
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
Created by: deleted user