The Punnett square in Figure 8 can be used to consider ... and the e allele for brown eye color. The red (E) phenotype is dominant to the brown (e) phenotype, so heterozygous flies with the ...

Work out the new possible genetic combinations inside the Punnett square. Use this to answer ... Aa and AA both result in the grey fur phenotype, there is a 75% probability that the offspring ...

See how researchers use test crosses to find out the genotype behind the phenotype. The test cross is another fundamental tool devised by Gregor Mendel. In its simplest form, a test cross is an ...