Question

Genes are the physical basis of heredity. How are chromosomes, genes and DNA connected? Explain.

Answer 1

Hint: Genes are the heredity unit that move from parents to the offspring and from generation to generation during sexual reproduction.

Complete answer:
To solve this question, we should first know about genes. Gene is the basic unit of life or we can say it is a hereditary unit. The genes are transferred from parents to the offspring. It controls the life processes of the cells because of the gene we resemble to our parents; we receive phenotypic and genotypic characteristics from the parents. The genes are found in the chromosomes and it forms the physical basis of heredity. The genes, chromosomes, and the DNA are related to each other; the gene is the segments of DNA that carry the code for a particular protein that involve in the cellular function of the body. The chromosome is the structure that is found inside the nucleus of the cell that consists of genes. The chemical component of genes is the DNA that consists of four nucleotide bases; adenine, guanine, thymine, and cytosine. The adenine is paired with thymine and guanine is paired with cytosine.

Note: There are a total 20,000 to 25,000 genes found in humans. In humans there are 23 pairs of chromosomes in each cell that means 46 chromosomes in total. Any abnormality in the chromosome number can cause genetic disorders.