genes are made of chromosomes and contains many DNA's
DNA is made of genes and contains many chromosomes
genes are made of DNA and contain my chromosomes
chromosomes are made of DNA and contain many genes
second is correct 2nd.
DNA is the cell's genetic material, contained in chromosomes within the cell nucleus and mitochondria. A chromosome contains many genes. A gene is a segment of DNA that provides the code to construct a protein. The DNA molecule is a long, coiled double helix that resembles a spiral staircase.
Therefore, the answer is the first one.