The discovery of isotopes led to the discovery of which part of the atom

neutron

Explanation:

Before the discovery of neutron by Chawick, Thomson discovered the atom and in later researches he also discovered the electron as negatively charged particle residing outside the nucleus of any atom but he could not find neutron by then.

Later on with the discovery of isotopes, Chadwick also proposed the discovery of neutron and he explained that isotopes of same element consists of same electron and proton number but have varying neutron number.

i'm gonna put a couple so you can chose from

explanation:

if you know the fur color of the offspring mice, you can use the ratios to identify the genotypes of the parents.

if either parent mouse passes a dominant allele, the offspring will have black fur.

if the parental mice has two different fur color (i.e white and black) , the color of the offspring's fur would be either black, white, or the combination of both (grey)

hope this : )