Genetic/statistic link?

[unDRdog]

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any body have a good link that explains statistical calculations of progeny in basic genetics?

 

[linkin06]

a single trait cross is easy and gives the familiar 1:2:1 genotype ratio. to figure out multiple traits at same time, just multiply the probability of each individual probability. also, this should go under study questions.

 

[unDRdog]

a single trait cross is easy and gives the familiar 1:2:1 genotype ratio. to figure out multiple traits at same time, just multiply the probability of each individual probability. also, this should go under study questions.

agreed..my bad...

 

[unDRdog]

as the OP can i move this to study ?s....if not will a mod move...again sry..thanks

 

[Vanguard23]

Can someone tell me how to do pedigrees well or point me to a good source?

 

[fishbait63]

I don't really have a soure but from my experiences there are a few consistent trends:

Autosomal dominant: one parent must have the phenotype
Autosomal recessive: both parent must be carriers or express the phenotype
for sex link more males than females should carry phenotype
sex link dom: one parent must have the phenotype
sex link recessive: father must express phenotype for female progeny to express phenotype

i hope this helps

 

[linkin06]

some quick pointers:
if it appears in every generation, it's likely to be dominant.
if you see a diseased progeny from two seemingly "normal", then it's recessive
if it affects mostly males, then it is probably xlinked recessive