Which part of chromosomes passes in trait from parent to offspring
a. allele
b. gene
c. genotype
d. phenotype
e. zygote

Genes

Explanation:

The genes are the basic unit of hereditary which are a part of chromosomes that are passed from parents to their offspring.

Genes are responsible for the propagation of hereditary features. They are usually located on the chromosome.

Genes are made up of protein molecules.

Each parent passes down a copy of their gene which are inherited by the offspring and they determine a character state.

They generally make up the genotype.

the answer is barium and copper bromide