A | B |
XX | female |
XY | male |
XCY | normal male |
XcY | colorblind male |
XCXc | carrier female for colorblindess |
XcXc | colorblind female |
sex likned traits | hemophilia and colorblindness |
mutiple alleles | more than one gene pair controls the outcome, blood type is an example |
polygenic | many genes combining for ONE trait |
"true" hair, eye, skin color and height are ________ traits | polygenic |
how do you recognize a polygenic patter | many variations for a single trait |
slient mutation | a mistake in the DNA but the amino acid coded for remains the same |
frame shift | this type of mutation will cause the entire reading frame of codons to slide over to fill in the missing DNA, all the DNA sequences are now wrong |
this casues a frame shift | deletion |
nondisjunction | when entire whole chromosomes go the wrong way during meiosis anaphase |