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20 Cards in this Set

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  • Back
mutation
the suddon change in the genetic makeup of an individual
nondisjunction
the abnormal segregation of chromosomes during meiosis
Sutton
corolated mendel's laws with chromosomes and genes
Bridges
A genetisist, he discoverd nondisjunction of fruitflies
Beadle and Tatum
neurospora mutant
Griffith (Avery)
they discovered transformation where nonencapsulated pneumococci were transformed into encapsulated...DNA caused this
Crossing Over
exchange of corresponding segments of a chromosome pair
Gene
part of a DNA molecule that's genetically active and produces a trait
gene linkage
the linear arrangement of genes on a chromosome
genotype
The gene combinations in an organism
incomplete dominance
Two unlike genes are expressed equally
lethal mutation
It is fatal to an organism
Morgan
discovered sex linkage in drosophila
What did Avery and his associates discover?
DNA caused transformation
Mendel
The father of genetics...came up with several genetic laws
Weismann
A genetisist said gametes are haploid
What is a sex-linked characteristic?
Any trait found on the x chromosome
What is mendel's concept of unit characters
A pair of chromosomes are responsible for the characteristics
Muller
Discovered the effects of x-rays on drosophila
Drosophila
fruit flies