6. In canaries, the gene for singing is dominant over the gene for nonsinging. When hybrid singing
canaries are mated with nonsinging canaries, what percentage of the offspring is likely to possess the
singing trait? What would be the genotype of these singing birds?

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.