1. Figure: 1.3
Title:
Homunculus in Sperm
Caption:
Depiction of the “homunculus,” a sperm containing a miniature adult, perfect in proportion and fully formed.

2. Figure: 1.5
Title:
Structure of DNA
Caption:
Summary of the structure of DNA, illustrating on the left the nature of the double helix, and on the right the chemical components making up both strands.

3. Figure: 1.6
Title:
Transcription and Translation
Caption:
Depiction of genetic expression involving transcription of DNA into mRNA and the translation of mRNA on a ribosome into a protein.

4. Figure: 1.7
Title:
Amino Acids to Proteins
Caption:
Depiction of three steps leading to the formation of a protein. Initially, two amino acids are joined to form a dipeptide. As synthesis continues, a longer polypeptide chain is formed, which often coils into a right-handed alpha helical structure. This polypeptide then folds into a three-dimensional conformation specific to the protein’s function.

5. Figure: 1.8
Title:
Human Pedigree
Caption:
A representative human pedigree tracing a genetic characteristic through three generations.

6. Figure: 1.11
Title:
Cloning Dolly
Caption:
Dolly, a Finn Dorset sheep cloned from the genetic material of an adult mammary cell, shown next to her firstborn lamb, Bonnie. (Photo courtesy of Roslin Institute)