Compare a case of meiotic drive where 70% of the pollen and 40% of the ovules carry the A allele independently with a case of non-independent assortment where an offspring gets an A allele from the pollen with probability 0.7 when the ovule provides an A and gets an A allele from the pollen with probability 0.3 when the ovule provides an a. The ovule provides A with probability 0.5.
We have seen that meiotic drive and lack of independence can create unusual distributions of genotypes for offspring. In the above case, find the joint distribution of genotypes in the offspring. Use your joint distribution to find the probability that an offspring is a heterozygote.