Final answer:
The components of a DNA molecule are deoxyribose sugars, phosphates, and nitrogenous bases. The two strands of the DNA double helix are held together by hydrogen bonds. James Watson, Francis Crick, Rosalind Franklin, and Maurice Wilkins made discoveries that led to the double-helix model of DNA.
Step-by-step explanation:
The components that make up a DNA molecule are deoxyribose sugars, phosphates, and nitrogenous bases. The two strands of the DNA double helix are held together by hydrogen bonds formed between the nitrogenous bases. The scientists who made discoveries that led to the double-helix model of DNA are James Watson, Francis Crick, Rosalind Franklin, and Maurice Wilkins. Rosalind Franklin used X-ray crystallography to learn about the structure of DNA. The model of DNA discovered by Watson and Crick is called the double helix. The term that defines the nearly perfect fit between A-T and C-G nucleotides is complementary base pairing. The process during which DNA is copied prior to cell division is called DNA replication. The enzyme that joins nucleotides to synthesize a new, complementary strand of DNA is DNA polymerase. The tips of eukaryotic chromosomes are known as telomeres. The phase in the process of DNA replication that results in two copies of DNA is called semiconservative replication.