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Human Genetics 10.30

Biology Ch. 13-14

QuestionAnswer
gene linkage the way the genes are arranged along the chromosomes
deletion of part of fifth chromosome (RARE) causes severe physical and mental retardation. cry sounds like cat screeching. usually alive for a few weeks
gene mutations change in the gene itself
deletion remove an amino acid
addition add amino acid
substitution substitute amino acid
mutagen (can be carcinogenic[cause cancer]) something that causes mutation
some things that turn genes on and off: --temperature --hormones --sex-linked characteristics
cystic fibrosis AUTOSOMAL RECESSIVE (autosomal=not sexlinked, recessive=need 2 bad ganes) thick mucus, cant chew food, cupping/clapping, mostly Caucasians.
Huntingtons disease AUTOSOMAL DOMINANCE slow deterioration physically and mentally, no cure
gene pool all the genes an organism can have
hardy-weinberg principle uses a formula to calculate the frequency of dominant and recessive alleles
eugenics science that tries to improve the human race by using gentics IMPROVING GENE POOL (hitler)
amniocentesis removal of fluid from a fetus. can check for sex and certain defects
choronic villi biopsy removal of tissue from placenta -->babys cells
PKU screen newborns for a # of diff diseases
tay-sachs disease mostly in jew. AUTOSOMAL RECESSIVE. 4-8 mnths baby deteriates. death by 1-5 yrs.
burbank master of plant breeding
good results of inbreeding : homozygous strands,
good results of gentic engineering: --could replace missing genes --get rid of bad genes --stronger and better traits --baby markets
lesch-nyhan syndrome RARE. physical defects. uncontrollable gnawing of fingers and lips.
parthenogenesis developement of unfertilized egg. DRONE.
dr. morgan discovered... sexlinked charecteristics
"royal disease" and what? HEMOPHILIA. "bleeders disease". continuous bleeding
Created by: luvsamantha_t
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