In animals and plants, there are two pairs of chromosomes - one set from a male and the other set from a female. But occasionally, the original fertilized cell doesn't quite divide correctly and more than two sets arises. The fertilized cell continues to divide with the result that all the cells have the extra set of chromosomes. This happens much oftener in plants and the plant will be sterile and can't form seeds.
The answer to your question would be B
Answer:
chemical weathering
In warmer climates, chemical weathering is more rapid because the chemical reactions that dissolve rocks and minerals are accelerated by warm temperatures.
Answer:
B) Two factors control each inherited trait
Once the DNA of a person has been copied it can be compared to the DNA of other people by using PCR (Polymerase Chain Reaction).