C. A mutation is often described by the phenotype , or observable characteristic. D. Can occur in any body cell , but can only be inherited in higher organisms if it occurs in a sex cell . E. A mutagenic agent is a substance which causes mutations. How many cells are still alive after treating them with UV light compared to a control group not exposed to UV light. Size of colonies formed by irradiated bacteria compared to colony size of non- irradiated bacteria 3.
Mutated cells can lose the ability to form the pigment and form white colonies.
Different forms of the same gene. They may be the same of different. You have 2 alleles for the eye color gene, one on the chromosome that came from mom, and one on the chromosome from dad. An allele of a gene which requires two copies in order to be expressed. The actual genetic makeup of an individual.