After mixing a heat-killed, phosphorescent (light-emitting) strain of bacteria with a living, nonphosphorescent strain, you disc
over that some of the living cells are now phosphorescent. Which observation(s) would provide the best evidence that the ability to phosphoresce is a heritable trait?
Phosphorescence in descendants of the living cells
Explanation:
Bacteria have the ability to take up the gene from other bacteria or surrounding. So when heat-killed phosphorescent(light-emitting) strain of bacteria is mixed with a non-phosphorescent strain than there is a chance that the gene that encodes for phosphorescence is transferred into some non-phosphorescent strain.
So those bacteria which get the gene will have ability to phosphorescent and can pass its gene to its descendant. So if the phosphorescence ability passes to offspring then it would provide evidence that the ability to phosphoresce is a heritable trait.
Answer: Even though the allele is recessive it is passed down from parent to child and if both parents have the recessive allele it is possible the child will have sickle cell as it is inherited.
