I believe it would be B. More than a year (Since it is a slow change, and that is the longest amount of time). Hopefully this helps
Well say the father had the genotype BB (dominant brown) and his mom had the genotype bb (recessive blonde).
If the boy got only one allele of brown hair and his phenotype is brown hair, then his genetic type is Bb
He is heterozygous (has two different alleles). But since brown hair is dominant, his phenotype is brown hair. But he does have the blonde recessive allele.
Hope this helps!
Answer:
carbohydrates, lipids, nucleus acids and proteins
Answer:
increasing the number of molecules that have sufficient kinetic energy to react.
