Slideshow 5 and 6 Flashcards
conditional probability
calculated when the prob of an event is impacted by another
Dihybrid def
double heterozygote
symbolizing genes on same chromosome
Ry/rY
symbolizing genes on seperate chromosomes
R/r ; Y/y
symbolizing genes whose postion is unknown
R/r . Y/y
Mono hybrid cross
A/a x A/a
Di hybrid cross
A/a . R/r x A/a . R/r
Independent assortment
two genes on seperate chromosomes
Di hybrid cross with independent assortment ratio
9:3:3:1
Independent assortment principle only applies when what
when causative geners of interest are located on seperate chromosomes
Tetrahybrid cross
A/a;B/b;C/c;D/d X A/a;B/b;C/c;D/d
Dihybrid test cross is with a tester sooooo
A/a ; B/b X a/a ; b/b
Statistical analysis
perform a dihybrid cross, count of offspring pheneotypes, if 9;3;3;1 ratio then it supports independent assortment
Do we expect exactly 9 3 3 1 everytime
no
what test do we use?
x^2 test