mosquito - 6 chromosomes housefly - 12 chromosomes garden pea - 14 chromosomes tobacco - 48 chromosomes toad - 22 chromosomes vampire bat - 28 chromosomes human - 46 chromosomes cow - 60 chromosomes duck - 80 chromosomes [ return to story ] ~~~000~~~ one at a time throughout his talk ( and his later paper ) mendel discusses his results one character at a time ( round peas / wrinkled peas ) .