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chp. 1617

inheritance continued

QuestionAnswer
linked genes genes in the chromosome that cannot be separated during meiosis due to them being close to eachother
crossing over linked genes can be separated through this process between homologous chromosomes
male xy
female xx
sperm can carry either X or Y chromosome. zygote determined by sperm
eggs all contain X chromosomes
chromosome that determines human gender 23rd pair of chromosome
sex-linked gene any gene located on a sex chromosome
many gene disorders are located on the x chromosome
most common gene disorder red-green color blindness hemophilia Duchenne muscular dystrophy
Red-green color blindness difficulties distinguishing colors. red appears grat. others green appears gray. some red and grey are indistinguishable
Hemophilia A blood clotting factor is abnormal or missing. Individuals may bleed to death after a small cut
Duchenne muscular dystrophy A protein normally found in muscle is missing, and the muscles become severely weakened. Even breathing becomes difficult, and affected individuals usually die young.
All of the X-linked diseases are recessive
X inactivation happens to female mammals.
Created by: 1574238891
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