In order for a recessive trait to be apparent in an organism, the organism must receive a copy of the allele for that trait from both parents. Let the: black coat: B brown coat: b Trotter: T pacer: t
The offspring received both of the recessive alleles because it demonstrates the recessive phenotypes. Therefore, they genotype of the offspring is: bbtt
The black horse that is a pacer that can produce this offspring will be: Bbtt
Therefore, the brown horse's genotype must be: bbTt
The offspring will receive b from both parents and t from both parents.
Each combination of an element with a different number of neutrons is called an isotope. The radioactive isotope is called the parent, and the isotope formed by the decay is called the daughter