Say you are given a male fly with a yellow body. How could you use a test cross to determine this fly's genotype? In order to set up your test cross, you must first realize that the male fly has ...

To answer this question, an experiment called a test cross can be performed. Test crosses help researchers determine the genotype of an organism when only its phenotype (i.e., its appearance ...

Genetics and lifestyle both contribute to how ... "Your income, postcode and background shouldn't determine your chances of living a long and healthy life," Bryan Williams, chief scientific ...