What's the difference between a genotype and a phenotype 1) , The genotypes are in the sperm traveling to the mother's egg, and phenotypes are the result of the egg and sperm combining in the zygote. 2) , Phenotypes are the recessive genes in a person and can't be passed to the next generation. Genotypes are the dominant genes and will be passed down to the next generation. 3) , Genotypes are a person's entire genetic make-up, and phenotypes are only observable characteristics. 4) , Genotypes are found in females during conception, and phenotypes are only found in males