The following method illustrates the gamete formation of an individual that is homozygous dominant for one trait and heterozygous for another but it can be applied to any diploid cross.

First, determine the genotype of the individual. Long antennae are a dominant trait and are indicated by L, normal wings are also dominant and are indicated by N. In this question we have an individual that is homozygous dominant for antennae but heterozygous for wings. What then, would be it's genotype?







Now, unless you have been told that these two traits are linked (on the same chromosome), you may assume that they sort independently. The illustration at the right shows the two homologous pairs of chromosomes after replication but before meiosis.





Which of the images below show the cells produced at the end of meiosis I for the above chromosomes?




Which of the images below show the cells produced at the end of meiosis II for the above chromosomes?






Now return to the question page and select the correct answers.