The right answer is a person has more than two alleles for a certain trait.
Duplication is a genetic mutation characterized by the doubling of genetic material on a chromosome. There are several mechanisms that result in the duplication of either a large chromosomal portion, a gene, or a nucleotide sequence.
They are little soft bodied insect. They suck the plant's nutritious liquid and if they are in large number, they can kill the plants.
Answer:
D.can be good for the environment and for people
Water, ice, and wind can all cause weathering. Climate can also affect the rate of weathering.
