Dihybrid inheritance and Codominance

What is dihybrid inheritance?

how 2 characters determined by 2 different genes on different chromosomes are inherited

Discrepancies in the ratios are due to what?

statistical error

What is the law of independent assortment?

each member of a pair of alleles may combine randomly with either of another pair

How do you write the alleles for codominant alleles?

C^RC^W

Why are observed ratios often not the same as expected ratios?

random fertilisation of games

small population

selection advantage / lethal alleles

What are the 3 alleles for blood type?

I^A I^B I^O

Which of the bloody type alleles are codominant?

I^A and I^B

Which blood type allele is recessive?

I^O